Reacting acids with bases
2 marks · EasyA student wants to make an alkaline solution by dissolving a metal oxide in water.
(a)[1 mark]
Name one metal oxide that will produce an alkali when dissolved in water.
(b)[1 mark]
Write a chemical equation for its reaction with water.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) sodium oxide
(b) Na2O + H2O → 2NaOH
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Names a suitable Group 1 oxide, e.g., sodium oxide.
B1 (b) · 1 mark · Correct chemical equation, e.g.: Na2O + H2O → 2NaOH.
Worked solution
a) sodium oxide
b) Na2O + H2O → 2NaOH