$0.05 \mathrm{M} \mathrm{CuSO}_{4}$ when treated with $0.01 \mathrm{M} \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ gives green colour solution of $\mathrm{Cu}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$. The [SPM : Semi Permeable Membrane] | $\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ | $\mathrm{CuSO}_{4}$ | |---|---| Side X SPM SideY Due to osmosis :

(D) Molarity of $\mathrm{CuSO}_{4}$ solution is lowered.

(A) Green colour formation observed on side Y.

(B) Green colour formation observed on side X.

(C) Molarity of $\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ solution is lowered.

JEE Main · 2024 · 09 Apr 2024 · Shift 1 · Solutions

0.05 M CuSO_{4}

when treated with

0.01 M K_{2} Cr_{2} O_{7}

gives green colour solution of

Cu_{2} Cr_{2} O_{7}

. The [SPM : Semi Permeable Membrane]

$K_{2} Cr_{2} O_{7}$	$CuSO_{4}$

Side X SPM SideY

Due to osmosis :

(A)Green colour formation observed on side Y.
(B)Green colour formation observed on side X.
(C)Molarity of $K_{2} Cr_{2} O_{7}$ solution is lowered.
(D)Molarity of $CuSO_{4}$ solution is lowered.✓ Correct

Answer: (D)

Solution

Across a semipermeable membrane only solvent passes, from lower to higher concentration. Water moves into the more concentrated

C u S O_{4}

side, so the molarity of the

C u S O_{4}

solution is lowered. Option (4).

JEE Main · 2024 · 09 Apr 2024 · Shift 1 · Single correct option

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