Methane and sulfur react to produce carbon disulfide (CS2), a liquid often used in the production of cellophane.

CH4 (g) + S8 (s) CS2 (l) + H2S (g)

(a) Balance the equation. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.)

(b) Calculate the moles CS2 produced when 2.12 mol S8 is used.

(c) How many moles H2S are produced?

a) 2CH4 (g) + S8 (s) → 2CS2 (l) + 4H2S (g)

b) 4.24 moles CS2

c) 8.48 moles H2S

Explanation:

Step 1: The unbalanced equation

CH4 (g) + S8 (s) → CS2 (l) + H2S (g)

(a) Balance the equation. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answe.)

2CH4 (g) + S8 (s) → 2CS2 (l) + 4H2S (g)

(b) Calculate the moles CS2 produced when 2.12 mol S8 is used.

For 2 moles CH4 we need 1 mol S8 to produce 2 moles CS2 and 4 moles H2S

For 2.12 moles S8 we'll have 2*2.12 = 4.24 moles CS2

(c) How many moles H2S are produced?

For 2 moles CH4 we need 1 mol S8 to produce 2 moles CS2 and 4 moles H2S

For 2.12 moles S8 we'll have 4*2.12 = 8.48 moles H2S