Lead storage battery contains 38 % by weight solution of H 2 SO 4. The van't Hoff factor is 2.67 at this concentration. The temperature in Kelvin at which the solution in the battery will freeze is (Nearest integer). Given K f=1.8 K kg mol -1

Question

Lead storage battery contains 38 % by weight solution of H 2 SO 4. The van't Hoff factor is 2.67 at this concentration. The temperature in Kelvin at which the solution in the battery will freeze is (Nearest integer). Given K f=1.8 K kg mol -1 (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Δ T f = i . K f ⋅ m ⇒ Δ T f =2.67 × 1.8 × (38/98) × (1000/62) ⇒ Δ T f =30.05 ∴ F . P .=243 K

Q. Lead storage battery contains $38%$ by weight solution of $H_{2} S O_{4}$ . The van't Hoff factor is $2.67$ at this concentration. The temperature in Kelvin at which the solution in the battery will freeze is ______(Nearest integer).
Given $K_{f} = 1.8 K k g m o l^{- 1}$

$Δ T_{f} = i . K_{f} \cdot m$
$\Rightarrow Δ T_{f} = 2.67 \times 1.8 \times \frac{38}{98} \times \frac{1000}{62}$
$\Rightarrow Δ T_{f} = 30.05$
$∴ F . P . = 243 K$

Q. Lead storage battery contains 38% by weight solution of H2​SO4​. The van't Hoff factor is 2.67 at this concentration. The temperature in Kelvin at which the solution in the battery will freeze is ______(Nearest integer). Given Kf​=1.8Kkgmol−1

ΔTf​=i.Kf​⋅m ⇒ΔTf​=2.67×1.8×9838​×621000​ ⇒ΔTf​=30.05 ∴F.P.=243K

Q. Lead storage battery contains $38%$ by weight solution of $H_{2} S O_{4}$ . The van't Hoff factor is $2.67$ at this concentration. The temperature in Kelvin at which the solution in the battery will freeze is ______(Nearest integer).
Given $K_{f} = 1.8 K k g m o l^{- 1}$

$Δ T_{f} = i . K_{f} \cdot m$
$\Rightarrow Δ T_{f} = 2.67 \times 1.8 \times \frac{38}{98} \times \frac{1000}{62}$
$\Rightarrow Δ T_{f} = 30.05$
$∴ F . P . = 243 K$