Exam question practise

Question 1

State a medical use of barium sulfate.

State why this use of barium sulfate is safe, given that solutions containing barium ions are poisonous. (2)

Answer 1

1) used to absorb x-rays/barium meals

2) BaSO4 is insoluble

Question 2

Write an equation for the reaction of magnesium hydroxide with hydrochloric acid.

Answer 2

Mg(OH)2 + 2HCl —–> MgCl2 + 2H2O