In the reaction: Zn + NaNO 3 + NaOH → Na 2 ZnO 2 + A + H 2 O The sum of stoichiometric coefficients of Z n and A in the balanced reaction with simplest integer coefficient is

Step-by-step solution

Balanced reaction is 4 Z n + N a N O 3 + 7 N a O H → 4 N a 2 Z n O 2 + N H 3 + 2 H 2 O [ A ] The sum of stoichiometric coefficients of Z n and A = 4 + 1 = 5