Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Calculations with equations involving solutions
19 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →Sodium carbonate reacts with hydrochloric acid according to the following equation:
If 0.06 mol of hydrochloric acid, HCl, are used in the reaction, calculate the number of moles of sodium carbonate, Na2CO3, that will completely react.
Question 2
5 marks · Hard
Answer and see the solution →Ethanoic acid reacts with sodium hydroxide as follows:
A student mixes 30 cm³ of 0.40 mol/dm³ ethanoic acid with excess sodium hydroxide.
(a)[2 marks]Calculate the number of moles of ethanoic acid used.
(b)[3 marks]Calculate the mass of sodium acetate (CH₃COONa) produced. (Relative formula mass: CH₃COONa = 82)
Question 3
2 marks · Hard
Answer and see the solution →Calculate the number of moles of sulfuric acid, H₂SO₄, in 75 cm³ of solution with concentration 0.20 mol/dm³.