Acids, Bases and Salts
pH, indicators, neutralisation, common salts, properties and uses.
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Take a full mock →Q1 · Acids, Bases and Salts · EASY
A student tested three solutions P, Q and R with red litmus paper. Solution P turned the red litmus blue, solution Q did not change the colour, and solution R kept it red. What can be concluded about the nature of these solutions?
Q2 · Acids, Bases and Salts · MEDIUM
During a neutralisation reaction, 20 mL of hydrochloric acid (HCl) of a certain concentration exactly neutralises 30 mL of sodium hydroxide (NaOH) solution of concentration 0.1 M. What is the concentration of the HCl solution?
Q3 · Acids, Bases and Salts · HARD
A sample of rainwater collected from an industrial area has a pH of 4. Another sample collected from a forest area has a pH of 6. Compare the hydrogen ion concentration in the industrial area rainwater to that in the forest area rainwater.
Q4 · Acids, Bases and Salts · EASY
What is the pH value of pure water at 25°C?
Q5 · Acids, Bases and Salts · EASY
Which indicator turns pink in basic solution?