A gaseous mixture contains three gases A , B and C with a total number of moles of 10 and total pressure of 10 atm . The partial pressures of A and B are 3 atm and 1 atm , respectively. If C has molec

Question

A gaseous mixture contains three gases A , B and C with a total number of moles of 10 and total pressure of 10 atm . The partial pressures of A and B are 3 atm and 1 atm , respectively. If C has molecular weight 2 , then weight of C present in the mixture is-

TestHub · Accepted Answer

P A ​ = n A ​ + n B ​ + n C ​ n A ​ ​ × 10 = 10 3 ​ × 3 = 3 ​ P B ​ = n A ​ + n B ​ + n C ​ n B ​ ​ × 10 = 10 1 ​ × 10 = 1 ∴ n C ​ = 10 − ( n A ​ + n B ​ ) = 10 − 4 = 6 w e i g h t o f C = 6 × 2 = 12 g ​

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