Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Which of the following sulphide is completely precipitated only when the acidic solution is made dilute?Option: 1 HgS<div class='qna-op

Which of the following sulphide is completely precipitated only when the acidic solution is made dilute?

Option: 1

HgS


Option: 2

PbS


Option: 3

CuS


Option: 4

CdS


Answers (1)

best_answer

As we have learnt,

The precipitation of Cd^{2+} in presence of H_2S is reversible.

When the concentration of H_2S is greater than 0.5 M, the precipitation is not complete. Concentrated acids dissolve the precipitate for the same reason. 

CdS is only completely precipitated when the acidic solution is made dilute.

Therefore, Option(4) is correct.

Posted by

Ritika Harsh

View full answer

Similar Questions

Latest Question