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t is possible to make a buffer that functions well near pH 7 using citric acid,

ID: 476063 • Letter: T

Question

t is possible to make a buffer that functions well near pH 7 using citric acid, which contains only carboxylate groups. Explain. Drag the terms on the left to the appropriate blanks on the right to complete the sentences.

Words : decrease, increase, repulsions, associates, attractionsattractions, dissociate

1. Successive deprotonations -------------- the () charge density on the resulting anion.

2.This results in unfavorable electrostatic --------- between the carboxylate anions, which reduces the likelihood that a proton would ----------

3.it is more favorable for the proton to remain bound to reduce unfavorable charge----------- . .

Explanation / Answer

1. Successive deprotonation increase the (-) charge density on resulting anion.

2. This results in unfavourable electrostatic repulsions between the carboxylate anion which reduce the likelihood that a proton would dissociate.

3. It is more favourable for proton to remain bound to reduce unfavourable charge repulsions.