Consider the equations below. 3 equations. 1: upper H subscript 2 right arrow 2 upper H. 2: upper C subscript 2 upper H subscript 4 plus upper H right arrow upper C subscript 2 upper H subscript 5. 3: upper C subscript 2 upper H subscript 5 plus upper H right arrow upper C subscript 2 upper H subscript 6.

When these equations are added together, what will the overall equation be?
Upper C subscript 2 upper H subscript 4 plus upper H subscript 2 right arrow upper C subscript 2 upper H subscript 6.

Upper H subscript 2 plus upper C subscript 2 upper H subscript 4 plus 2 upper H right arrow 2 upper H plus upper C subscript 2 upper H subscript 5 plus upper C subscript 2 upper H subscript 6.
Upper C subscript 2 upper H subscript 4 plus upper C subscript 2 upper H subscript 5 plus upper H subscript 2 right arrow upper C subscript 2 upper H subscript 5 plus upper C subscript 2 upper H subscript 6.