Read the given passage and answer the questions.
P, Q, R are different colourless solids, while S is a colourless solution. They are in random order) Sodium chloride (NaCl), Calcium Carbonate `(CaCO_(3))`, Acetic acid `(CH_(3)COOH)` and Phenolphthalein indicator. Small amount of the above substances were added in pairs (e.g. P with Q, Q with R etc.) to a small amount of water in a test tube. They give the following results as shown in the observation table.
Observation Table:

If acetic acid and hydrochloric acid of same concentration are taken, HCl is a stronger acid because it contains:

Options

A. more of `Cl^(-)` ions.
B. more of `H^(+)` ions.
C. less of `H^(+)` ions
D. more of `CH_(3)CO O^(-)` ions.

Answer

B

Explanation

HCl is stronger because it gives rise to more `H^(+)` ions than acetic acid.