could someone help me with this redox reaction?

Question

could someone help me with the redox equation and explain how you would balance it?

Ca(OH)2 + NaOH +ClO2 + C ----> NaClO2 + CaCO3 + H2O

Answer 1

Looking at the change in oxidation states, we see that Cl changes from +4 to +3, and C changes from 0 to +4. That means we must have a 4 in front of each Cl.

So Ca(OH)2 + NaOH + 4ClO2 + C ----> 4NaClO2 + CaCO3 + H2O

Now we see the other numbers which must go in:

Ca(OH)2 + 4NaOH + 4ClO2 + C ----> 4NaClO2 + CaCO3 + 3H2O

Answer 2

Find the compound or ion that loses charge when it goes though the reaction. that will be your redox eq.

Find the compound or ion that gains charge when going the reaction. this is your ox. eq.

now you have two half reaction.

1) balence for atoms
2) balence for charge (both half reations have to have same charge)
3) put half reaction back into original equation
4) balence for atoms
5) balence for charge
6) smallest whole number ratio