Question

Balance the following equations :
(a) CaCO3 (s) + HCl (aq) → CaCl2 (aq) + H2O (1) + CO2(g)
(b) Zn (s) + HCl (aq) → ZnCl2 (aq) + H2(g)
(c) MnO2(s) + HCl (aq) → MnCl2(aq) + H2O (1) + Cl2 (g)
(d) Na CO2 (s) + H2SO4 (aq) → Na2SO4 (aq) + H2O (1) + CO2 (g)
(e) Mg3N2 (s) + H2O (1) ► Mg(OH)2 (s) + NH, (g)
(f) NH; (g) + O2(g) → N, (g) + H2O (1)
(g) MgCl2 (aq) + Na CO2 (aq) → MgCO2 (s) + NaCl (aq)​​

Answer 1

Answer:

CaCO3 + 2HCl → CaCl2 + H2O + CO2 ... (i) Dilute sulphuric acid reacts with zinc granules. ... H2SO4(aq) + ZnS(s) → ZnSO4(aq) + H2(g). ( ii) ... The chemical equation

Answer 2

Explanation:

For balancing reactions, you need to check whether the coefficient or suffix values of all atoms are balanced or not. For example, if 3 Ca atoms are in reactants side and 3 Ca in product side, then reaction will be balanced. So the coefficients of all elements given in the reaction should be equal.