Answer:
The answer is KBr
Explanation:
By making a balance of the elements in the reaction you can determine the missing compound.
In the left side of the reaction we have:
- 2 of H
- 1 of Br
- 1 of K
- 1 of O
In the right side we have:
- 2 of H
- 1 of O
Doing the subtraction we have missing:
- 1 of Br
- 1 of K
So the answer is KBr
