Question

i) Zn+ NaOH
ii) CaCO3 + H2O+ CO2
iii) NaOH+SO2
iv) NaHCO3 + H2SO4
v) HCl + H20-
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Answer 1

1) zinc + sodium hydroxide

2) calcium carbonate + water + carbon dioxide

3) sodium hydroxide + sulphate

4) sodium hydrochloric acid + sulphuric acid

5) hydrochloric acid + water

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