Question

How much heat is produced by burning 4.00 moles of acetylene under standard state conditions?

a) 900 kJ
b) 1800 kJ
c) 3600 kJ
d) 7200 kJ

Answer 1

When 1 mole of acetylene is burned, 228.3 kJ of heat is absorbed. Multiplying this value by 4 moles gives the amount of heat produced by burning 4.00 moles of acetylene, which is 913.2 kJ. The correct answer is 900 kJ.

Step-by-step explanation:

When 1 mole of acetylene is produced, 228.3 kJ of heat is absorbed. To find the amount of heat produced by burning 4.00 moles of acetylene, we need to multiply 228.3 kJ by 4. The calculation is as follows:

Heat produced = 228.3 kJ/mole * 4 moles = 913.2 kJ

Therefore, the correct answer is 900 kJ (option a).