Which of the following is not a redox reaction?

1 ⤊

Which of the following is not a redox reaction?

2H2 + 2 O2 ---> 2 H2O
Zn(s) + H2SO4(aq) ----> ZnSO4(aq) + H2(g)
H2O(l)+ NH3 ---> NH4 + OH
Cl2 + 2KBr ---->Br2 + 2 KCl

2007-11-02 11:15:21 · 2 answers · asked by burgler09 5 in Science & Mathematics ➔ Chemistry

2 answers

Only the H2O + NH3 --> NH4+ + OH- IS NOT a redox reaction.

You can tell by looking at the oxidation number of things. In all of the other reactions, two substances' oxidation numbers change during the reaction.

2007-11-02 11:18:56 · answer #1 · answered by hcbiochem 7 · 1⤊ 0⤋

The third one. In the others, with the rules for redox, there is a reduction and oxidation occurring.

2007-11-02 18:26:38 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋