The molecular conductivity of acetic acid at infinite dilution is 390 S ⋅ cm 2 mole -1 and for 0.1 M acetic acid solution is 5.8 S ⋅ cm 2 mole -1. The hydrogen ion concentration of the solution is

Question

The molecular conductivity of acetic acid at infinite dilution is 390 S ⋅ cm 2 mole -1 and for 0.1 M acetic acid solution is 5.8 S ⋅ cm 2 mole -1. The hydrogen ion concentration of the solution is (A) 15 × 10-3 (B) 15 × 10-4 (C) 66 × 10-3 (D) 66 × 10-4

Tardigrade Admin · Accepted Answer

α=(∧ C /∧∞)=(5.8/390) ≅ 15 × 10-3 [ H +]= C α=0.1 × 15 × 10-3=15 × 10-4

Q. The molecular conductivity of acetic acid at infinite dilution is $390 S \cdot c m^{2} m o l e^{- 1}$ and for $0.1 M$ acetic acid solution is $5.8 S \cdot c m^{2} m o l e^{- 1}$ . The hydrogen ion concentration of the solution is

$15 \times 1 0^{- 3}$

$15 \times 1 0^{- 4}$

$66 \times 1 0^{- 3}$

$66 \times 1 0^{- 4}$

$α = \frac{\land _{C}}{\land ^{\infty}} = \frac{5.8}{390} ≅ 15 \times 1 0^{- 3}$
$[H^{+}] = C α = 0.1 \times 15 \times 1 0^{- 3} = 15 \times 1 0^{- 4}$

Q. The molecular conductivity of acetic acid at infinite dilution is 390S⋅cm2mole−1 and for 0.1M acetic acid solution is 5.8S⋅cm2mole−1. The hydrogen ion concentration of the solution is

15×10−3

15×10−4

66×10−3

66×10−4