I know nothing about chemistry, but am wondering if someone could help me with these.


1) Balance this redox reaction using the oxidation-number method. Zn + O2 + HCl ® ZnCl2 + H2O

2) Balance this redox reaction using the half-reaction method. (basic solution) Zn + MnO4- ® Zn(OH)2 + MnO2

2 answers

I believe #1 is 2Zn+02+4---->2Zn Cl2+2H20,can someone confirm?
1st one is right, the second one cant be right because there is no H on the left side.