Leaving Cert Ireland · Chemistry

Acids, Bases and Salts

5 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

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What is the pH of a $1 \times 1 0^{- 5}$ mol/dm $^{3}$ solution of the strong monobasic acid HCl?
What is the pH of a $1 \times 1 0^{- 1}$ mol/dm $^{3}$ solution of the strong base NaOH at 25 °C?
25 cm $^{3}$ of 0.1 mol/dm $^{3}$ sodium hydroxide solution is neutralised by hydrochloric acid of concentration 0.25 mol/dm $^{3}$ according to NaOH + HCl → NaCl + H $_{2}$ O. What volume of the acid is needed?
25 cm $^{3}$ of 0.2 mol/dm $^{3}$ sodium hydroxide solution is neutralised by sulfuric acid of concentration 0.25 mol/dm $^{3}$ according to 2NaOH + H $_{2}$ SO $_{4}$ → Na $_{2}$ SO $_{4}$ + 2H $_{2}$ O. What volume of the aci…
30 cm $^{3}$ of 0.2 mol/dm $^{3}$ sodium hydroxide solution is neutralised by hydrochloric acid of concentration 0.25 mol/dm $^{3}$ according to NaOH + HCl → NaCl + H $_{2}$ O. What volume of the acid is needed?

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