Question

9. Aqueous sodium hydroxide reacts with carbon dioxide gas to yield soluble sodium carbonate and liquid water in equation form.

10. Solid magnesium oxide reacts with hydrochloric acid to yield a solution of magnesium chloride and liquid water in equation from.

(IT VERY URGENT pls)

Answer 1

1. NaOH + CO2 -----> Na2CO3 + H2O
2. MgO + 2HCl ----->MgCl2 + H2O

Answer 2

The molecular formula of sodium hydroxide is NaOH, carbon dioxide is CO₂, sodium carbonate is Na₂CO₃, water is H₂O, magnesium oxide is MgO, Hydrochloric acid is HCl, magnesium chloride is MgCl₂.

• NaOH and carbon dioxide are the reactants of equation 1.
• Na₂CO₃ and H₂O are the products of equation 1.
• MgO and HCl are the reactants of equation 2.
• MgCl₂ and H₂O are the products of equation 2.
• The reactions are as follows:

        2NaOH (aq) + CO₂(g) -----> Na₂CO₃ + H₂O(l)

          MgO(s)+ 2HCl   ------> MgCl₂(aq) + H₂O(l)