Consider the reaction represented by the following equation: C\(_2\)H\(_2\) + yH\(_2\) → C\(_2\)H\(_6\). The value of y in the reaction is

A.

4

B.

3

C.

2

D.

1

Correct answer is C

C\(_2\)H\(_2\) + yH\(_2\) → C\(_2\)H\(_6\)

To balance the equation, we must have 2 carbon atoms on both sides and 6 hydrogen atoms.

On the LHS and RHS, carbon = 2 atoms.

On the LHS, Hydrogen = 2 + 2y.

On the RHS, Hydrogen = 6.

⇒ 2 + 2y = 6

2y = 4

y = 2.