In the precipitation of sulphides of second group of basic radiacals- H 2 S passed into the acidified solution with dilute HCl- If the solution is not acidified- then which is the correct statement-A- Sulphides of both the groups get precipitatedB- Only the sulphides of second group get precipitatedC- Only the sulphides of fourth get precipitatedD- Neither of the sulphides of second and fourth groups get precipitated

You visited us 78 times! Enjoying our articles? Unlock Full Access!

Solubility Product

In the precip...

Question

In the precipitation of sulphides of second group of basic radiacals, $H_{2} S$ passed into the acidified solution with dilute HCl. If the solution is not acidified, then which is the correct statement ?

Only the sulphides of second group get precipitated

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Only the sulphides of fourth get precipitated

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Neither of the sulphides of second and fourth groups get precipitated

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Sulphides of both the groups get precipitated

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D
Sulphides of both the groups get precipitated

In the absence of dilute HCl, ionization of $H_{2} S$ is not suppressed due to common ion effect. As a result, $[S^{2 -}]$ increases to such an extent that fourth group sulphides having higher $K_{S P}$ values also get precipitated.

Suggest Corrections

Similar questions

In the precipitation of sulphides of second group of basic radiacals, $H_{2} S$ passed into the acidified solution with dilute HCl. If the solution is not acidified, then which is the correct statement ?

Solubility product of a sulphide MS is $3 \times 10^{- 25}$ and that of another sulphide

NS is $4 \times 10^{- 40}$ . In ammonia solution

Q. Assertion: Second group metals are precipitated as their sulphides in the presence of dilute

H C l

.
Reason: Sulphides of

3^{r d}, 4^{t h}, 5^{t h}

and

6^{t h}

group metals have very low solubility products compared to those of second group metals.

H_{2} S

is passed through the solution in an acidic medium to precipitate the sulphides of group II cations but in an alkaline medium to precipitate the sulphides of group IV cations because:

Q. Precipitation of second group sulphides in qualitative analysis is carried out with

H_{2} S

in presence of___.

Join BYJU'S Learning Program

In the precipitation of sulphides of second group of basic radiacals, H2S passed into the acidified solution with dilute HCl. If the solution is not acidified, then which is the correct statement ?

The correct option is D Sulphides of both the groups get precipitated In the absence of dilute HCl, ionization of H2S is not suppressed due to common ion effect. As a result, [S2−] increases to such an extent that fourth group sulphides having higher KSP values also get precipitated.

In the precipitation of sulphides of second group of basic radiacals, $H_{2} S$ passed into the acidified solution with dilute HCl. If the solution is not acidified, then which is the correct statement ?