Question

When ethane (C2H6) burns, it produces carbon dioxide and water:

2C2H6(g)+7O2(g)→4CO2(g)+6H2O(l)

How many moles of water will be produced when 16 moles of ethane are burned?

Responses

32 moles

32 moles

48 moles

48 moles

56 moles

56 moles

64 moles

64 moles

Answer 1

From the equation, 2 mol C2H6 → 6 mol H2O, so 1 mol C2H6 → 3 mol H2O. For 16 mol C2H6:

16 × 3 = 48 mol H2O.

Answer: 48 moles.