Question

For the skeletal chemical equation LaC2(g) + H2O(ℓ) → La(OH)3(s) + C2H2(g) + H2(g) what is the coefficient of C2H2 in the balanced equation?

Answer 1

The answer to your question is 2

Step-by-step explanation:

1.- Write the equation a check if it is balanced or not

LaC₂ + H₂O ⇒ La(OH)₃ + C₂H₂ + H₂

1 - La - 1

2 - C - 2

2 - H - 7

1 - O - 3

2.- The reaction is not balanced so lets do it

LaC₂ + 3H₂O ⇒ La(OH)₃ + C₂H₂ + H₂

1 - La - 1

2 - C - 2

6 - H - 7

3 - O - 3

LaC₂ + 3H₂O ⇒ La(OH)₃ + C₂H₂ + 1/2H₂

1 - La - 1

2 - C - 2

6 - H - 6

3 - O - 3

2LaC₂ + 6H₂O ⇒ 2La(OH)₃ + 2C₂H₂ + 1H₂

2 - La - 2

4 - C - 4

12 - H - 12

6 - O - 6