Chemistry
Carbon dioxide and sulphur dioxide gas can be distinguished by using :
(a) moist blue litmus paper
(b) lime water
(c) acidified potassium dichromate paper
(d) none of the above
Practical Chemistry
17 Likes
Answer
acidified potassium dichromate paper
Reason — There is no effect of CO2 gas on potassium dichromate whereas SO2 turns acidified potassium dichromate from orange to clear green.
K2Cr2O7 + H2SO4 + 3SO2 ⟶ K2SO4 + Cr2(SO4)3 + H2O
Answered By
9 Likes
Related Questions
Write your observation and a balanced equation for Ammonium chloride being heated.
State the original colour of the following substances and colour of residue obtained after heating.
(a) ammonium dichromate
(b) copper carbonate
(c) lead nitrate
(d) zinc carbonate
Assertion (A): Chlorine turns moist blue litmus red and finally decolourises it.
Reason (R): Chlorine is acidic in nature and an oxidising agent.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Glass rod dipped in NH4OH gives dense white fumes with HCl gas.
Reason (R): HCI gas is acidic in nature.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.