{"id":913,"date":"2020-11-27T21:33:06","date_gmt":"2020-11-27T16:03:06","guid":{"rendered":"https:\/\/learnsteer.sasnaka.org\/science\/?p=913"},"modified":"2021-09-30T23:12:12","modified_gmt":"2021-09-30T17:42:12","slug":"12-03-02","status":"publish","type":"post","link":"https:\/\/learnsteer.sasnaka.org\/science\/advanced-level-science\/12-03-02\/","title":{"rendered":"12.03.02 &#8211; \u0da2\u0dbd\u0dba\u0dda  \u0d85\u0dba\u0db1\u0dd3\u0d9a\u0dbb\u0dab\u0dba"},"content":{"rendered":"\r\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\r\n<div class=\"wp-block-button is-style-shadow\" style=\"text-align: center\"><a class=\"wp-block-button__link\" style=\"border-radius: 15px\" href=\"https:\/\/drive.google.com\/uc?export=download&amp;id=10j1_0HZRgHTPhAP-PuXIAuhp93zVbOvF\" target=\"_blank\" rel=\"noreferrer noopener\">\u0db4\u0dcf\u0da9\u0db8\u0dda \u0dc3\u0da7\u0dc4\u0db1 Download \u0d9a\u0dbb\u0d9c\u0db1\u0dca\u0db1.<\/a><\/div>\r\n<\/div>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" style=\"text-align: center\"><span style=\"color: #3366ff;font-family: verdana, geneva, sans-serif\"><strong>\u0da2\u0dbd\u0dba \u0d85\u0dba\u0db1\u0dd3\u0d9a\u0dbb\u0dab\u0dba<\/strong><\/span><\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0db8\u0dda \u0daf\u0d9a\u0dca\u0dc0\u0dcf \u0d85\u0db4 \u0dc0\u0dd2\u0dc3\u0dd2\u0db1\u0dca \u0d9a\u0dbb\u0db1 \u0dbd\u0daf \u0d85\u0db0\u0dca\u200d\u0dba\u0dba\u0db1\u0dba\u0db1\u0dca\u0dc4\u0dd2 \u0dc3\u0d82\u0dc1\u0dd4\u0daf\u0dca\u0db0 \u0da2\u0dbd\u0dba \u0d85\u0dba\u0db1(H<sup>+<\/sup>, OH<sup>&#8211;<\/sup>) \u0db6\u0dc0\u0da7 \u0dc0\u0dd2\u0d9d\u0da7\u0db1\u0dba \u0dc0\u0dd2\u0db8\u0d9a\u0dca \u0dc3\u0db3\u0dc4\u0db1\u0dca \u0d9a\u0dbb \u0db1\u0ddc\u0db8\u0dd0\u0dad.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>H<sub>2<\/sub>O \u0d85\u0dab\u0dd4\u0dc0\u0d9a \u0dc0\u0db1 O-H \u0db6\u0db1\u0dca\u0db0\u0db1 \u0dc0\u0dd2\u0dc2\u0db8 \u0dc0\u0dd2\u0da0\u0dca\u0da1\u0dda\u0daf\u0db1 \u0dc0\u0dd2\u0d9d\u0da7\u0db1\u0dba\u0da7 \u0db7\u0dcf\u0da2\u0db1\u0dba \u0dc0\u0dd3 \u0da2\u0db1\u0dd2\u0dad \u0dc0\u0db1 \u0da2\u0dbd\u0dd3\u0dba H<sup>+ <\/sup>\u0dc4\u0dcf \u0da2\u0dbd\u0dd3\u0dba OH\u00af\u00a0\u0d85\u0dba\u0db1 \u0dc4\u0dda\u0dad\u0dd4\u0dc0\u0dd9\u0db1\u0dca \u0da2\u0dbd\u0dba\u0da7 \u0dc0\u0dd2\u0daf\u0dca\u200d\u0dba\u0dd4\u0dad\u0dca \u0dc3\u0db1\u0dca\u0db1\u0dcf\u0dba\u0d9a\u0dba\u0d9a\u0dad\u0dcf\u0dc0\u0dba\u0d9a\u0dca \u0db4\u0dc0\u0dad\u0dd2.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0dc3\u0d82\u0dc1\u0dd4\u0daf\u0dca\u0db0 \u0da2\u0dbd\u0dba\u0dda \u0d89\u0dad\u0dcf\u0db8 \u0d85\u0da9\u0dd4 \u0db4\u0dca\u200d\u0dbb\u0db8\u0dcf\u0dab\u0dba\u0d9a\u0dd2\u0db1\u0dca \u0db7\u0dcf\u0d9c\u0dd2\u0d9a\u0dc0 \u0dc3\u0dd2\u0daf\u0dd4\u0dc0\u0db1\u0dca\u0db1\u0dcf\u0dc0\u0dd4 \u0db8\u0dd9\u0db8 \u0dc3\u0d82\u0dc3\u0dd2\u0daf\u0dca\u0db0\u0dd2\u0dba \u0da2\u0dbd\u0dd3\u0dba \u0d85\u0dba\u0dab\u0dd3\u0d9a\u0dbb\u0dab\u0dba \u0dc0\u0dda.<\/li>\r\n<\/ul>\r\n<p style=\"text-align: center\"><span class=\"wp-katex-eq\" data-display=\"false\">{\\mathrm H}_2{\\mathrm O}_{(\\mathrm l)}\\rightarrow{\\mathrm H^+}_{(\\mathrm{aq})}+\\mathrm{OH}\u00af_{(\\mathrm{aq})};\\triangle\\mathrm H&gt;0<\/span><\/p>\r\n\r\n\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\" style=\"text-align: center\"><span style=\"color: #333399;font-family: verdana, geneva, sans-serif\"><strong><span class=\"has-inline-color has-vivid-cyan-black-color\">\u0da2\u0dbd\u0dba\u0dda \u0d85\u0dba\u0db1\u0dd2\u0d9a \u0d9c\u0dd4\u0dab\u0dd2\u0dad\u0dba<\/span><\/strong><\/span><\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0dc3\u0d82\u0dc1\u0dd4\u0daf\u0dca\u0db0 \u0da2\u0dbd\u0dba\u0dd9\u0dc4\u0dd2 \u0d85\u0dba\u0dab\u0dd3\u0d9a\u0dbb\u0dab \u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0\u0dbd\u0dd2\u0dba \u0dc3\u0dbd\u0d9a\u0db8\u0dd4.<\/li>\r\n<\/ul>\r\n<p style=\"text-align: center\"><span class=\"wp-katex-eq\" data-display=\"false\">\\begin{array}{l}{\\mathrm H}_2\\mathrm O\\;_{(\\mathrm l)}\\;\\rightleftharpoons\\;{\\mathrm H^+}_{(\\mathrm{aq})}+\\mathrm{OH}\u00af_{(\\mathrm{aq})}\\;\\\\2{\\mathrm H}_2\\mathrm O\\;_{(\\mathrm l)}\\rightleftharpoons{\\mathrm H}_3{\\mathrm O^+}_{(\\mathrm{aq})}+\\mathrm{OH}\u00af_{(\\mathrm{aq})}\\end{array}<\/span><\/p>\r\n\r\n\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0dc3\u0db8\u0dad\u0dd4\u0dbd\u0dd2\u0dad\u0dad\u0dcf \u0db1\u0dd2\u0dba\u0db8\u0dba \u0dba\u0dd9\u0daf\u0dd3\u0db8\u0dd9\u0db1\u0dca<\/li>\r\n<\/ul>\r\n<p style=\"text-align: center\"><span class=\"wp-katex-eq\" data-display=\"false\">{\\mathrm K}_{\\mathrm c}=\\frac{\\left[{\\mathrm H^+}_{(\\mathrm{aq})}\\right]\\left[\\mathrm{OH}\u00af_{(\\mathrm{aq})}\\right]}{\\left[{\\mathrm H}_2{\\mathrm O}_{(\\mathrm l)}\\right]}<\/span><\/p>\r\n<p style=\"text-align: center\"><span class=\"wp-katex-eq\" data-display=\"false\">{\\mathrm K}_{\\mathrm c}\\left[{\\mathrm H}_2{\\mathrm O}_{(\\mathrm l)}\\right]=\\left[{\\mathrm H^+}_{(\\mathrm{aq})}\\right]\\left[{\\mathrm{OH}^-}_{(\\mathrm{aq})}\\right]<\/span><\/p>\r\n\r\n\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0da2\u0dbd\u0dba\u0dda \u0d85\u0dba\u0dab\u0dd3\u0d9a\u0dbb\u0db1 \u0db4\u0dca\u200d\u0dbb\u0dad\u0dd2\u0dc1\u0dad\u0dba \u0d85\u0db1\u0dd4\u0dc0 \u0dc3\u0db8\u0dca\u0db8\u0dad \u0d8b\u0dc2\u0dca\u0dab\u0dad\u0dca\u0dc0\u0dba\u0dda\u0daf\u0dd3 H<sup>+<\/sup>\u0dc4\u0dcf OH<sup>&#8211; <\/sup>\u0dc0\u0dbd \u0dc3\u0dcf\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dab\u0dba 10<sup>-7 <\/sup>mol dm<sup>-3 <\/sup>\u00a0 \u0d9a\u0da7 \u0d86\u0dc3\u0db1\u0dca\u0db1 \u0d89\u0dad\u0dcf \u0d9a\u0dd4\u0da9\u0dcf \u0d85\u0d9c\u0dba\u0d9a\u0dca \u0db6\u0dc0 \u0dc3\u0ddc\u0dba\u0dcf\u0d9c\u0dd9\u0db1 \u0d87\u0dad. \u0db8\u0dd9\u0db8 \u0daf\u0dad\u0dca\u0dad \u0dc0\u0dbd\u0da7 \u0d85\u0db1\u0dd4\u0dc0 \u0d85\u0dba\u0dab\u0dd3\u0d9a\u0dbb\u0dab\u0dba \u0dc4\u0dda\u0dad\u0dd4\u0dc0\u0dd9\u0db1\u0dca H<sub>2<\/sub>O <sub>(l) <\/sub>\u00a0\u0dc4\u0dd2 \u0dc3\u0dd2\u0daf\u0dd4\u0dc0\u0db1 \u0dc3\u0dcf\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dab \u0d85\u0da9\u0dd4\u0dc0\u0dd3\u0db8 \u0db1\u0ddc\u0d9c\u0dd9\u0db1\u0dd2\u0dba \u0dba\u0dd4\u0dad\u0dd4 \u0dad\u0dbb\u0db8\u0dca \u0d9a\u0dd4\u0da9\u0dcf \u0db6\u0dc0\u0dad\u0dca , \u0d91\u0db1\u0dba\u0dd2\u0db1\u0dca \u0dc3\u0db8\u0dc3\u0dca\u0dad \u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0\u0dbd\u0dd2\u0dba \u0db4\u0dd4\u0dbb\u0dcf\u0db8 [H<sub>2<\/sub>O<sub>(l)<\/sub>] \u0db1\u0dd2\u0dba\u0dad\u0dc0 \u0db4\u0dc0\u0dad\u0dd2\u0db1 \u0db6\u0dc0\u0dad\u0dca \u0db4\u0dd0\u0dc4\u0dd0\u0daf\u0dd2\u0dbd\u0dd2\u0dba.<\/li>\r\n<\/ul>\r\n<p style=\"text-align: center\"><span class=\"wp-katex-eq\" data-display=\"false\">{\\mathrm K}_{\\mathrm c}\\times\\left[{\\mathrm H}_2{\\mathrm O}_{(\\mathrm l)}\\right]={\\mathrm K}_{\\mathrm w}<\/span><\/p>\r\n\r\n\r\n\r\n\r\n\r\n<p>\u0dba\u0dd0\u0dba\u0dd2 \u0dc3\u0dd0\u0dbd\u0d9a\u0dd6 \u0dc0\u0dd2\u0da7 \u0da2\u0dbd\u0dba\u0dda \u0d85\u0dba\u0db1\u0dd2\u0d9a \u0d9c\u0dd4\u0dab\u0dd2\u0dad\u0dba<\/p>\r\n<p style=\"text-align: center\"><span class=\"wp-katex-eq\" data-display=\"false\">\\begin{array}{l}{\\mathrm K}_{\\mathrm w}=\\left[{\\mathrm H^+}_{(\\mathrm{aq})}\\right]\\left[{\\mathrm{OH}^-}_{(\\mathrm{aq})}\\right]\\\\{\\mathrm K}_{\\mathrm w}=\\left[{\\mathrm H}_3{\\mathrm O^+}_{(\\mathrm{aq})}\\right]\\left[{\\mathrm{OH}^-}_{(\\mathrm{aq})}\\right]\\end{array}<\/span><\/p>\r\n\r\n\r\n\r\n\r\n\r\n<p>25\u00b0C\u00a0 \u0dba\u0db1 \u0dc3\u0db8\u0dca\u0db8\u0dad \u0d8b\u0dc2\u0dca\u0dab\u0dad\u0dca\u0dc0\u0dba\u0dda\u0daf\u0dd3 \u0dc3\u0d82\u0dc1\u0dd4\u0daf\u0dca\u0db0 \u0da2\u0dbd\u0dba \u0d85\u0dba\u0db1\u0dd3\u0d9a\u0dbb\u0dab\u0dba\u0dd9\u0db1\u0dca \u0da2\u0db1\u0dd2\u0dad\u0dc0\u0db1<\/p>\r\n<p style=\"text-align: center\"><span class=\"wp-katex-eq\" data-display=\"false\">\\begin{array}{l}\\left[{\\mathrm H^+}_{(\\mathrm{aq})}\\right]=\\left[{\\mathrm{OH}^-}_{(\\mathrm{aq})}\\right]=1\\times10^{-7\\;}\\mathrm{mol}\\;\\mathrm{dm}^{-3}\\\\\\end{array}<\/span><\/p>\r\n\r\n\r\n\r\n\r\n\r\n<p>\u0dc0\u0db1 \u0db6\u0dc0 \u0dc3\u0ddc\u0dba\u0dcf\u0d9c\u0dd9\u0db1 \u0d87\u0dad.<\/p>\r\n<p style=\"text-align: center\"><span class=\"wp-katex-eq\" data-display=\"false\">\\begin{array}{rcl}{\\mathrm K}_{\\mathrm w}&amp;=&amp;\\left[{\\mathrm H^+}_{(\\mathrm{aq})}\\right]\\left[{\\mathrm{OH}^-}_{(\\mathrm{aq})}\\right]\\\\&amp;=&amp;\\left(1\\times10^{-7\\;}\\mathrm{mol}\\;\\mathrm{dm}^{-3}\\right)\\left(1\\times10^{-7\\;}\\mathrm{mol}\\;\\mathrm{dm}^{-3}\\right)\\\\&amp;=&amp;1\\times10^{-14\\;}\\mathrm{mol}^{2\\;}\\mathrm{dm}^{-6}\\\\&amp;&amp;\\end{array}<\/span><\/p>\r\n\r\n\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\" style=\"text-align: center\"><span style=\"color: #333399;font-family: verdana, geneva, sans-serif\"><strong><span class=\"has-inline-color has-vivid-cyan-black-color\">K<sub>w<\/sub> \u0dc4\u0dd2 \u0dc3\u0d82\u0d9b\u0dca\u200d\u0dba\u0dcf\u0dad\u0dca\u0db8\u0d9a \u0d85\u0d9c\u0dba \u0d8b\u0dc2\u0dca\u0dab\u0dad\u0dca\u0dc0\u0dba\u0dad\u0dca \u0dc3\u0db8\u0d9c \u0dc0\u0dd2\u0da0\u0dbd\u0db1\u0dba<\/span><\/strong><\/span><\/h3>\r\n<table width=\"318\">\r\n<tbody>\r\n<tr>\r\n<td style=\"text-align: center\" rowspan=\"3\" width=\"45\">\r\n<p>&nbsp;<\/p>\r\n<p>&nbsp;<\/p>\r\n<p><strong>Kw<\/strong><\/p>\r\n<p>&nbsp;<\/p>\r\n<\/td>\r\n<td style=\"text-align: center\" width=\"85\">\r\n<p><strong>T&gt; 25\u00b0C<\/strong><\/p>\r\n<\/td>\r\n<td style=\"text-align: center\" width=\"188\">\r\n<p><strong>K<sub>w<\/sub> &gt; 1\u00d710<sup>-14 <\/sup>mol<sup>2<\/sup>dm<sup>-6<\/sup><\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center\" width=\"85\">\r\n<p><strong>T= 25\u00b0C<\/strong><\/p>\r\n<\/td>\r\n<td style=\"text-align: center\" width=\"188\">\r\n<p><strong>K<sub>w<\/sub> = 1\u00d710<sup>-14 <\/sup>mol<sup>2<\/sup>dm<sup>-6<\/sup><\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center\" width=\"85\">\r\n<p><strong>T&lt; 25\u00b0C<\/strong><\/p>\r\n<\/td>\r\n<td style=\"text-align: center\" width=\"188\">\r\n<p><strong>K<sub>w<\/sub> &lt; 1\u00d710<sup>-14 <\/sup>mol<sup>2<\/sup>dm<sup>-6<\/sup><\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<div class=\"wp-block-group\">\r\n<div class=\"wp-block-group__inner-container\"><span style=\"color: #000000\"><\/span><\/div>\r\n<\/div>\r\n<p><span style=\"color: #000000\"><!-- \/wp:group -->\r\n\r\n<!-- wp:heading {\"level\":4} --><\/span><\/p>\r\n<h3 style=\"text-align: center\"><span style=\"font-family: verdana, geneva, sans-serif;color: #333399\"><strong>\u0d86\u0db8\u0dca\u0dbd\u0dd2\u0d9a\/\u0db7\u0dcf\u0dc2\u0dca\u0db8\u0dd2\u0d9a\/ \u0d8b\u0daf\u0dcf\u0dc3\u0dd3\u0db1 \u0da2\u0dbd\u0dd3\u0dba \u0daf\u0dca\u200d\u0dbb\u0dcf\u0dc0\u0dab<\/strong><\/span><\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:table {\"align\":\"center\"} -->\r\n<figure class=\"wp-block-table aligncenter\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>\u0d86\u0db8\u0dca\u0dbd\u0dd2\u0d9a<\/td>\r\n<td>[ H<sup>+<\/sup><sub>(aq) <\/sub>]\u00a0\u00a0\u00a0\u00a0 &gt;\u00a0\u00a0\u00a0 [ OH\u00af<sub>(aq)<\/sub>]<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>\u0db7\u0dcf\u0dc2\u0dca\u0db8\u0dd2\u0d9a<\/td>\r\n<td>[ H<sup>+<\/sup><sub>(aq) <\/sub>]\u00a0\u00a0\u00a0\u00a0 &lt;\u00a0\u00a0 [ OH\u00af<sub>(aq)<\/sub>]<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>\u0d8b\u0daf\u0dcf\u0dc3\u0dd3\u0db1<\/td>\r\n<td>[ H<sup>+<\/sup><sub>(aq) <\/sub>]\u00a0\u00a0\u00a0\u00a0 =\u00a0\u00a0 [ OH\u00af<sub>(aq)<\/sub>]<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n<!-- \/wp:table -->\r\n\r\n<!-- wp:embed {\"url\":\"https:\\\/\\\/youtu.be\\\/3OHSYr5Gn1o\",\"type\":\"video\",\"providerNameSlug\":\"youtube\",\"responsive\":true,\"className\":\"wp-embed-aspect-16-9 wp-has-aspect-ratio\"} -->\r\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\">\r\n<div class=\"wp-block-embed__wrapper\">\r\n<p>&nbsp;<\/p>\r\n<p><iframe loading=\"lazy\" title=\"\u0da2\u0dbd\u0dba\u0dda \u0dc3\u0dca\u0dc0\u0dba\u0d82 \u0d85\u0dba\u0db1\u0dd2\u0d9a\u0dbb\u0dab\u0dba |PH lessons 2 |chemistry in sinhala\" width=\"696\" height=\"392\" src=\"https:\/\/www.youtube.com\/embed\/3OHSYr5Gn1o?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\r\n<\/div>\r\n<\/figure>\r\n<!-- \/wp:embed -->\r\n\r\n<!-- wp:spacer -->\r\n<div class=\"wp-block-spacer\" style=\"height: 100px\" aria-hidden=\"true\">\u00a0<\/div>\r\n<!-- \/wp:spacer -->\r\n\r\n<!-- wp:buttons {\"contentJustification\":\"center\"} -->\r\n<div class=\"wp-block-buttons is-content-justification-center\"><!-- wp:button {\"borderRadius\":15,\"className\":\"is-style-shadow\",\"tdButtonSize\":\"normal\"} -->\r\n<div class=\"wp-block-button is-style-shadow td_btn_normal\" style=\"text-align: center\"><a class=\"wp-block-button__link\" style=\"border-radius: 15px\" href=\"https:\/\/drive.google.com\/uc?export=download&amp;id=10j1_0HZRgHTPhAP-PuXIAuhp93zVbOvF\" target=\"_blank\" rel=\"noreferrer noopener\">\u0db4\u0dcf\u0da9\u0db8\u0dda \u0dc3\u0da7\u0dc4\u0db1 Download \u0d9a\u0dbb\u0d9c\u0db1\u0dca\u0db1.<\/a><\/div>\r\n<!-- \/wp:button --><\/div>\r\n<!-- \/wp:buttons -->\r\n\r\n<!-- wp:spacer -->\r\n<div class=\"wp-block-spacer\" style=\"height: 100px\" aria-hidden=\"true\">\u00a0<\/div>\r\n<!-- \/wp:spacer -->\r\n\r\n<!-- wp:paragraph -->\r\n<p style=\"text-align: center\">\u0d89\u0daf\u0dd2\u0dbb\u0dd2\u0dba\u0dda\u0daf\u0dd3 \u0db4\u0dca\u200d\u0dbb\u0dc1\u0dca\u0db1 \u0d87\u0dad\u0dd4\u0dbd\u0dad\u0dca \u0dc0\u0db1\u0dca\u0db1\u0dda \u0db8\u0dd9\u0dad\u0db1\u0da7\u0dba\u0dd2.<\/p>\r\n<!-- 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