Question

Which of the following does not give oxygen on heating?
(a) Zn(ClO₃)₂
(b) K₂Cr₂O₇
(c) (NH₄)₂Cr₂O₇
(d) KClO₃

Answer 1

ZN(CLO3)2 does not give oxygen on heating

Answer 2

Answer:

Answer is (NH4)2Cr2O7

Explanation:

Accd to options

1. Zn(ClO3)2 =heat=  ZnCl2 + 3(O2)

2. 4(K2Cr2O7) =heat= 4(K2Cr2O4) + 2(Cr2O3) + 3(O2)

3. (NH4)2CrO7 =heat= N2 + Cr2O3 + 4(H2O)   ----------------No O2 formed here

4. KClO3 =heat= 2(KCl) + 3(O2)