Question

If 0.2 mol of sodium chloride is required how many grams of sodium chloride should be taken?

Answer 1

Given:​
Mole of sodium chloride (n)​ = 0.2 [1 Marks]

Solution:
Molecular mass of sodium chloride (M)​ = 23 + 35.5 = 58.5 g/mol​ [1 Marks]

Number of moles (n)​ =$\frac{m}{M}$
0.2 = $\frac{x}{58.5}$x = 11.7 g

Hence, 11.7g of sodium chloride is required to obtain 0.2 moles of NaCl.​