Question

_Na2S + _HCl -> NaCl + H2S

which of the following coefficients would balance this equation?

a. 2, 1, 2, 1
b. 1, 2, 1, 2
c. 1, 2, 2, 1
d. 2, 1, 1, 2

Answer 1

c. 1,2,2,1

Step-by-step explanation:

Na2S + 2HCl -> 2NaCl + H2S

Answer 2

C: 1, 2, 2, 1

Step-by-step explanation:

_Na2S + _HCl -> NaCl + H2S (unbalanced)

1Na2S + 2HCl -> 2NaCl + 1H2S

Na2S + 2HCl → 2NaCl + H2S (Balanced)

Hope this helps:)