Q28 / 160 · AP EAMCET 2022 (05 Jul Shift 1) · Chemistry
The correct order of coagulating power of the following ions to coagulate the positive sol is
$\underset{\mathrm{I}}{\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-},} \underset{\mathrm{II}}{\mathrm{Cl}^{-}}, \underset{\mathrm{III}}{\mathrm{SO}_4^{2-}}$
- AI $>$ II $>$ III
- BIII $>$ II $>$ I
- CI $>$ II $>$ III
- Correct answerDI $>$ III $>$ II
Solution
Coagulating power $\propto$ Charge
Charge on $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}>\mathrm{SO}_4^{2-}>\mathrm{Cl}^{-}$
$\therefore$ Correct order of coagulating power is
I $>$ III $>$ II
Hence, the correct answer is option: 'D'.