Question

Which of the following reactions is not an example of an oxidation-reduction reaction?

3Br2 + 2Ga yields 2GaBr3

H2S + Cl2 yields 2HCl + S

2PbS + 3O2 yields 2PbO + 2SO2

K2Cr2O7 + KOH yields 2 K2CrO4 + H2O

Answer 1

I got C, is that correct?

Answer 2

@aaronq can check my answer pls?

Answer 3

It's not C.

I'ts D

K2\(\underbrace{Cr_2}_{+6}\)O7 + KOH -> 2 K2\(\underbrace{Cr}_{+6}\)O4 + H2O

Note that there are 2 Cr's

Answer 4

OH, okay thank you for clearing that up for me.