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Why is a back titration sometimes used for an analysis rather than a direct titration?
Wiki User
∙ 13y ago
Back titrations are used when a reaction occurring in the conical flask can not be detected using an indicator such as phenolphthalein. So, after this titration has been performed, the 'excess' is then titrated with something that can be detected more easily using phenolphthalein etc.
Wiki User
∙ 13y ago
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What is the advantage of using indicator rather than using thermometer to detect the end point of an acid base titration?
At the endpoint of an acidimetric titration there is no temperature change at all, so a thermometer won't indicate that.You'd better use the color change of a proper indicator when the pH changes at the end point. The only advantage is that it works well!
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Why is it better to use a weak acid rather than a strong acid when you titrate a base?
Because it only partly ionises because it has less H+ ions so the reaction is not as fast, therefore the titration is easier to do becasue you have more time to see when it has reached neutral etc Edit: This answer is entirely incorrect. NEVER use a weak acid or a weak base as the titrant. Doing so will result in the formation of a buffer during the titration, and no useful information can be gained.
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It prevent the solution from spelling
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