MolSynapsequestion bank

MolSynapse / Question bank / Qualitative Analysis: Cations / Group I and group II cations (Pb, Cu, Bi, Cd, As, Sb, Sn)

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3qc046

Select the correct statements about lead(II).

A $PbCl X_{2}$ dissolves in aqueous $NH X_{3}$ giving a colourless $[Pb (NH X_{3}) X_{4}] X^{2 +}$ solution.
B $PbSO X_{4}$ dissolves in hot concentrated ammonium acetate by forming a weakly ionised soluble acetate species.
C $PbCl X_{2}$ is a white solid that dissolves in hot water and recrystallises on cooling.
D $PbCrO X_{4}$ is yellow, insoluble in dilute acetic acid and soluble in $NaOH$ .

Answer: B, C, D

Statements 1 to 3 are standard properties of lead(II). Aqueous ammonia gives a white precipitate of lead hydroxide/basic chloride with

Pb X^{2 +}

and does not form a stable ammine, so statement 4 is false.

Practice Qualitative Analysis: Cations More on Group I and group II cations (Pb, Cu, Bi, Cd, As, Sb, Sn)

Previous questionNext question

More questions on Group I and group II cations (Pb, Cu, Bi, Cd, As, Sb, Sn)