Chemistry Exam > Chemistry Questions > If hydrogen sulphide gas is passed through an...
Start Learning for Free
If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:
- a)CdS and NiS
- b)NiS and ZnS
- c)NiS
- d)CdS
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
If hydrogen sulphide gas is passed through an acidified solution conta...
Answer:
When hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, the following reactions take place:
CdSO4 + H2S → CdS↓ + H2SO4
NiSO4 + H2S → NiS↓ + H2SO4
ZnSO4 + H2S → ZnS↓ + H2SO4
The above reactions show that all the sulphates are converted to their respective sulphides. However, only CdS will be precipitated as it is insoluble in water, whereas NiS and ZnS are soluble in excess of hydrogen sulphide. Hence, the correct option is D, i.e., CdS.
Explanation:
The given question is based on the precipitation reactions of sulphides with metal ions. When hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, the gas reacts with the metal ions to form their respective sulphides. The reactions are shown above.
CdS is insoluble in water and forms a yellow precipitate. NiS and ZnS are soluble in excess of hydrogen sulphide and hence do not form precipitates. NiS is soluble in dilute mineral acids and forms green solutions, whereas ZnS is insoluble in dilute mineral acids and forms white precipitates.
Therefore, only CdS will be precipitated from the given mixture, and the other two sulphides will remain in solution. The precipitate obtained can be filtered, washed and dried to obtain pure CdS.
When hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, the following reactions take place:
CdSO4 + H2S → CdS↓ + H2SO4
NiSO4 + H2S → NiS↓ + H2SO4
ZnSO4 + H2S → ZnS↓ + H2SO4
The above reactions show that all the sulphates are converted to their respective sulphides. However, only CdS will be precipitated as it is insoluble in water, whereas NiS and ZnS are soluble in excess of hydrogen sulphide. Hence, the correct option is D, i.e., CdS.
Explanation:
The given question is based on the precipitation reactions of sulphides with metal ions. When hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, the gas reacts with the metal ions to form their respective sulphides. The reactions are shown above.
CdS is insoluble in water and forms a yellow precipitate. NiS and ZnS are soluble in excess of hydrogen sulphide and hence do not form precipitates. NiS is soluble in dilute mineral acids and forms green solutions, whereas ZnS is insoluble in dilute mineral acids and forms white precipitates.
Therefore, only CdS will be precipitated from the given mixture, and the other two sulphides will remain in solution. The precipitate obtained can be filtered, washed and dried to obtain pure CdS.
|
Explore Courses for Chemistry exam
|
|
Similar Chemistry Doubts
If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer?
Question Description
If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer?.
If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer?.
Solutions for If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free.
Here you can find the meaning of If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice If hydrogen sulphide gas is passed through an acidified solution containing a mixture of the sulphates of cadmium, nickel and zinc, which sulphide /sulphides will be precipitated:a)CdS and NiSb)NiS and ZnSc)NiSd)CdSCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Chemistry tests.
|
|
Explore Courses for Chemistry exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup