Question

Which one of the following statements is FALSE? a In a neutralization reaction, an acid reacts with base to produce a salt and H2O. b Spectator ions" appear in the total ionic equation for a reaction, but not in the net ionic equation c HF, HCl, and HNO3 are all examples of strong acids. d Titration is a process which can be used to determine the concentration of a solution. e For the reaction of a strong acid with a strong soluble base, the net ionic equation is always H+ + OH- --> H2O

Answer 1

Answer: Option (c) is the correct answer.

Explanation:

HF is a weak acid and not a strong acid. This is because fluorine is a highly electronegative atom and when it combines with a hydrogen atom then it will attract the valence electron of hydrogen atom more towards itself.

As a result, it will not dissociates easily to give hydrogen ion. Hence, it acts as a weak acid.

A neutralization reaction is defined as a reaction in which an acid reacts with a base to give salt and water. For example, $HCl + NaOH \rightarrow NaCl + H_{2}O$

It is true that, spectator ions "appear in the total ionic equation for a reaction, but not in the net ionic equation".

Titration is defined as a process in which concentration of an unknown solution is determined using a solution of known concentration.

Thus, we can conclude that the statement HF, HCl, and HNO3 are all examples of strong acids, is false.