Oxygen gas is not produced from the following decomposition reaction:

Options

A. `K_(2)Cr_(2)O_(7)overset(Delta)to`
B. `Ag_(2)C_(2)O_(4)overset(Delta)to`
C. `Pb(NO_(3))_(2)overset(Delta)to`
D. `Ag_(2)CO_(3)overset(Delta)to`

Answer

B

Explanation

`2K_(2)Cr_(2)O_(7)overset(Delta)to 2K_(2)CrO_(4)+Cr_(2)O_(3)+(3)/(2)O_(2)`
`Ag_(2)C_(2)O_(4)overset(Delta)to 2Ag+2CO_(2)`
`Pb(NO_(3))_(2) overset(Delta)toPbO+2NO_(2)+(1)/(2)O_(2)`
`Ag_(2)CO_(3) overset(Delta)to2Ag+CO_(2)+(1)/(2)O_(2)`