JEE Main 2026 Chemistry question
An excess of AgNO₃ 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)
Answer: 5
Solution
The complex is [Cr(H₂O)₄Cl₂]Cl, which has one ionisable chloride. Moles of complex=0.05×0.1=5×10⁻³, so 5×10⁻³ mol AgCl precipitates.