Answer:
Ca(OH)2 + 2 HBr = CaBr2 + 2 H2O
Step-by-step explanation:
Is it H2O2 on the right side and HBr2 on the left side?
Then there is no solution.
I think the formula must look like
Ca(OH)2 + HBr = CaBr2 + H2O
You have 2 Br on the right side then it must be 2 HBr on the left side.
Ca(OH)2 + 2 HBr = CaBr2 + H2O
You have 4 Hs and 2 Os on the left side then it must be 2 H2O on the right side.
Ca(OH)2 + 2 HBr = CaBr2 + 2 H2O
Now everything looks fine.