JEE Main 2026 Apr 6 Shift 2, Chemistry Q21: Introduction And Nomenclature

JEE Main2026Apr 6, Shift 2Chemistry

An excess of AgNO $_{3}$ is added to 100 mL of a 0.05 M solution of tetraaquadichloridochromium(III) chloride. The number of moles of AgCl precipitated will be _____ × 10 $^{- 3}$ . (Nearest integer)

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Solution

Tetraaquadichloridochromium(III) chloride is $[Cr(H_{2} O)_{4} Cl_{2}] Cl$ — two Cl ligands are inside the coordination sphere (not ionisable) and one Cl is the counter ion.

Only the ionisable Cl $^{-}$ precipitates with Ag $^{+}$ , so 1 mole of complex gives 1 mole of AgCl.

Moles of complex $= 0.05 \times 0.100 = 5 \times 1 0^{- 3}$ . Moles of AgCl $= 5 \times 1 0^{- 3}$ .

Answer: 5.

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JEE Main 2026 Apr 6 Shift 2, Chemistry Q21: Introduction And Nomenclature

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