How many grams of ZnCl₂ are required to produce 6.5 g of Zn with excess HCl? (Molar masses: ZnCl₂ = 136 g/mol, Zn = 65 g
Moles of Zn = 6.5/65 = 0.1 mol. 1 mol Zn from 1 mol ZnCl₂; mass = 0.1 × 136 = 13.6 g.
Ref: NCERT Class 11 Chemistry > Chapter 1: Some Basic Concepts of Chemistry > Topic: Laws of Chemical Combination - Conservation Mass Definite Multiple
