Question

which metal nitrate gives colourless gas on thermal decomposition

Answer 1

lead is the metal in which lead nitrate reacts to give lead oxide,nitrate and nitride

Answer 2

Hey dear,
You didn't mention anything about the options.

# Options are -
(a) NaNo3
(b) Cu(NO3)2
(c) Ba(NO3)2
(d) Hg(NO3)2

● Answer -
a) NaNO2

● Explanation -
- Sodium nitrate on thermal decomposition gives sodium nitrite and oxygen gas.

2NaNO3 ---> 2NaNO2 + O2

- This oxygen released is colourless ans well as odourless.

* KNO3 & CsNO3 also release oxygen on thermal decomposition.


Hope this helps you...