C2H4(g) + 3O2(g) 一> 2CO2(g) + 2H2O(g) From the reaction above, calculate the quantity of electricity required to discharge zinc.

C2H4(g) + 3O2(g) 一> 2CO2(g) + 2H2O(g) From the reaction above, what mole of CO2 will be produced from 56g of ethane?

A. 4

B. 3

C. 2 

D. 1

Use the given equation (even though the question says ethane, the equation is for ethene, C₂H₄):

C2H4 + 3O2 一> 2CO2 + 2H2O

Step 1: Calculate moles of ethene

Molar mass of C2H4 = 2(12) + 4(1) = 28 g mol^{-1}

Moles of C2H4 = 56/28 = 2  moles

Step 2: Use mole ratio

1 mole of C2H4 一> 2 moles of CO2

So:
2 moles of C2H4 一> 4 moles of CO2

✅ Correct answer: A. 4

PQN: 13