Calcium hydroxide(aq) + Nitric acid(aq) → Water(l) + Calcium nitrate(aq)

Question

Write the balanced chemical equations for the following and identify the type of reaction in each case.

a) Calcium hydroxide(aq) + Nitric acid(aq) → Water(l) + Calcium nitrate(aq)

b) Magnesium(s) + Iodine → Magnesium Iodide(s)

c) Magnesium(s) + Hydrochloric acid(aq) → Magnesium chloride(aq) + Hydrogen

d) Zinc(s) + Calcium chloride(aq) → Zinc Chloride(aq) + Calcium(s)

Answer 1

a) Ca(OH₂) + HNO₃ → H₂O + Ca(NO₃)₂

This is double decomposition reaction.

b) Mg + I₂ → Mgl₂

This is chemical combination reaction.

c) Mg + 2HCl → MgCl₂ + H₂ ↑

This is chemical displacement reaction.

d) Zn + CaCl₂ → ZnCl₂ + Ca

This is chemical displacement reaction. This reaction is not possible, because calcium is more reactive than zinc.