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A small quantity of phenolphthalein (an ...

A small quantity of phenolphthalein (an acid indicator) is added a decimolar solution of Sodium butyrate.Calculate the ratio of the ration of the coloured form of the indicator. `K_(a)` for butyric acid `=1.5xx10^(-5),K` for the indicator `=3.075xx10^(10)` and `K_(W)=10^(-14)` .Take `log 1.23=0.09`.

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To solve the problem, we need to calculate the ratio of the colored form of the phenolphthalein indicator in a decimolar solution of sodium butyrate. Here's a step-by-step breakdown of the solution: ### Step 1: Understand the System Sodium butyrate is a salt derived from butyric acid (a weak acid) and sodium hydroxide (a strong base). When dissolved in water, it undergoes hydrolysis, affecting the pH of the solution. ### Step 2: Calculate the pH of the Sodium Butyrate Solution The pH of a solution of a salt formed from a weak acid and a strong base can be calculated using the formula: \[ ...
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