Question

Write a balanced chemical equation for each of the following:(1) action of heat on calcium bicarbonate (2) action of dilute sulphuric acid on sodium carbonate (3) action of hot water on heated magnesium (4) action of dilute hydrochloric acid on iron (5) action of sodium hydroxide solution on aluminium

Answer 1

Answer:CaCo3—^— Cao + Co2(g)

Explanation: first of calcium carbonate cannot be heated as a solid as it only exist in solution. If you heat the solution and evaporate It to dryness is the resulting solid would be calcium carbonate. If you do this with sodium bicarbonate the heat will drive of bicarbonate Co2 resulting in sodium carbonate

Answer 2

Answer:

Hello

(2)

H2SO4 + Na2CO3 - 2NaSO4 + H2O + Co

Explanation:

we know that metal carbonate/ hydrogen carbonate + acid gives salt + water + carbon dioxide