Question 54 – Acids, alkalis and titrations - Questions

Part of the pH scale is shown below:

\text{pH 1 (strongly acidic) } \longleftrightarrow \text{ pH 7 (neutral) } \longleftrightarrow \text{ pH 14 (strongly alkaline)}

Five chemical experiments are described below:

A: calcium chloride (a neutral salt) is dissolved in pure water
B: sulfur dioxide gas is dissolved in pure water
C: potassium hydroxide solution is neutralised by adding dilute hydrochloric acid
D: excess potassium hydroxide solution is added to a weakly acidic solution
E: ammonia gas is dissolved in pure water

The table below shows the pH at the start and at the end of these five experiments. Complete the table by determining the correct experiment letter (A, B, C, D, or E) for each of the empty boxes.

pH at start	pH at end	Experiment
5	14	D
7	7
7	10
14	7
7	4

Part of the pH scale is shown below:

\text{pH 1 (strongly acidic) } \longleftrightarrow \text{ pH 7 (neutral) } \longleftrightarrow \text{ pH 14 (strongly alkaline)}

Five chemical experiments are described below:

A: calcium chloride (a neutral salt) is dissolved in pure water
B: sulfur dioxide gas is dissolved in pure water
C: potassium hydroxide solution is neutralised by adding dilute hydrochloric acid
D: excess potassium hydroxide solution is added to a weakly acidic solution
E: ammonia gas is dissolved in pure water

The table below shows the pH at the start and at the end of these five experiments. Complete the table by determining the correct experiment letter (A, B, C, D, or E) for each of the empty boxes.

pH at start	pH at end	Experiment
5	14	D
7	7
7	10
14	7
7	4

Acids, alkalis and titrations

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Acids, alkalis and titrations Questions