{"id":13394,"date":"2020-11-30T05:51:15","date_gmt":"2020-11-30T00:21:15","guid":{"rendered":"https:\/\/cbselibrary.com\/?p=13394"},"modified":"2020-11-30T16:11:57","modified_gmt":"2020-11-30T10:41:57","slug":"can-measure-strength-acids-alkalis","status":"publish","type":"post","link":"https:\/\/cbselibrary.com\/can-measure-strength-acids-alkalis\/","title":{"rendered":"How can we measure the strength of acids and alkalis?"},"content":{"rendered":"

How can we measure the strength of acids and alkalis?<\/strong><\/h2>\n
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  1. \n
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    1. An acid produces hydrogen ions in aqueous solution. The acidity<\/strong> of a solution is a measure of the concentration of the hydrogen ions<\/strong> in the solution.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
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      1. A base produces hydroxide ions in aqueous solution. The alkalinity<\/strong> of a solution is a measure of the concentration of the hydroxide ions<\/strong> in the solution.<\/li>\n
      2. In 1909, Soren Sorensen proposed the pH scale for measuring acidity or alkalinity of an aqueous solution.<\/li>\n<\/ol>\n

        The pH scale<\/strong><\/p>\n

        \"How<\/p>\n

          \n
        1. The pH scale normally has a range of values from 0 to 14 to indicate how acidic or alkaline an aqueous solution is.<\/li>\n
        2. The pH value measures the concentration of hydrogen ions or hydroxide ions.
          \npH < 7 \u2192 acidi<\/strong> solution
          \npH = 7 \u2192 neutral<\/strong> solution
          \npH > 7 \u2192 alkaline<\/strong> solution<\/li>\n
        3. The lower<\/strong> the pH value, the higher<\/strong> the concentration of hydrogen ions.
          \nThe higher<\/strong> the pH value, the higher<\/strong> the concentration of hydroxide ions.<\/li>\n
        4. The pH of values some common solutions used in daily life are shown below.
          \n\"How<\/li>\n
        5. The pH value of an aqueous solution can be measured by using
          \n(a) Universal Indicator
          \n(b) pH meter
          \n(c) acid-base indicators
          \n\"How<\/li>\n<\/ol>\n

          Table shows examples of acid-base indicators.<\/strong><\/p>\n\n\n\n\n\n\n\n
          Indicator<\/strong><\/td>\npH range<\/strong><\/td>\nColour change<\/strong><\/td>\n<\/tr>\n
          Acid\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Neutral<\/strong><\/td>\nAlkali<\/strong><\/td>\n<\/tr>\n
          Methyl orange<\/td>\n3.0 – 5.0<\/td>\nRed<\/td>\nOrange<\/td>\nYellow<\/td>\n<\/tr>\n
          Bromothymol blue<\/td>\n6.0 – 8.0<\/td>\nYellow<\/td>\nGreen<\/td>\nBlue<\/td>\n<\/tr>\n
          Phenolphthalein<\/td>\n8.0-10.0<\/td>\nColourless<\/td>\nColourless<\/td>\nPink<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          People also ask<\/strong><\/p>\n