NaCl + AgNO3 ⟶ AgCl + NaNO3
58 g 143 g
(i) 143 g AgCl is formed by 58 g NaCl
∴ 14.3 g of AgCl will be formed by 58\over143[/katek] × 14.3 = 5.8 g
Percentage of NaCl = 5.8\over30[/katek] × 100
= 19.33%
Hence, percentage of NaCl is 19.33%
Question
Commercial NaOH weighing 30 g. has some NaCl in it. The mixture on dissolving in water and treatment with excess AgNO3 soln. formed a precipitate weighing 14.3 g. What is the percentage of NaCl in the commercial sample of NaOH. NaCl + AgNO3 ⟶ AgCl + NaNO3 [Relative molecular mass of NaCl = 58 ; AgCl = 143]
- Percentage Composition
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