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# Which of the following is a fast reaction?(A) Reaction between ${H_2}$and ${O_2}$ to form${H_2}O$.(B) Reaction between acid and base to form salt and water.(C) Hydrolysis of ester.(D) Hydrolysis of sugar to glucose.

Last updated date: 29th Feb 2024
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Hint: In this reaction, we are discussing many reactions like neutralization, hydrolysis of ester and hydrolysis of sugar to glucose and identify which reaction gives the fastest product.

A neutralization reaction may be defined as the process in which hydrogen ions given by acids and hydroxide ions given by base combine to form unionized molecules of water .
When neutralization of strong acid and strong base takes place , the pH is 7 . When strong acid and weak base neutralize , the pH is less than 7 , whereas when neutralization takes place between strong base and weak acid , pH will be greater than 7 .
When a solution is neutralized, formation of salts takes place from equal weights of acid and base. The amount of acid needed is the amount that would give one mole of protons (${H^ + }$) and the amount of base needed is the amount that would give one mole of $O{H^ - }$.
For example , when hydrochloric acid and sodium hydroxide react sodium chloride is formed which is a salt .
$HCl(acid)\, + \,NaOH(base)\, \to \,NaCl(salt)\, + \,{H_2}O(Water)$
When ester is heated with a large excess of water containing a strong-acid catalyst. Alcohol and carboxylic acid is obtained from this hydrolysis .
Similarly , when sugar reacts with water , hydrolysis of sugar takes place in which two monosaccharides are formed .
Neutralization reaction is carried out fast. So, Option (B) is Correct.

So, the correct answer is Option B.

Note: The reverse reaction of hydrolysis is the making of sugar in which two monosaccharides react to form a disaccharide . Also the reverse of hydrolysis of ester is the esterification reaction in which formation of ester takes place .