Question

When hydrogen peroxide (H2O2) is used in rocket fuels, it produces water, oxygen, and heat.

2H2O2(l)⟶2H2O(l)+O2(g)ΔH=−196kJ

Part B:

How many kilojoules are released when 3.05 moles of H2O2 reacts?

Express your answer with the appropriate units.

Part C:

How many kilojoules are released when 277 g of O2 is produced?

Express your answer with the appropriate units.

Answer 1

Here, the given balanced equa- tion - 2 H2O₂ (1) 2H20 (1) + O2 (9) AH = -196 kJ Part B from the above equation we can see that - when 1 mole H₂O2 reacts acco- roding to the above equation, the heat released = 196 kJ Thus when 3.05 mole of H2O2 will react, then the heat relea. sed would be = 3.05 x 196 kat = 597.8 kJ -Thus the heat released would be = 597.8 KJ Aus - PartC: According to the above - equation - when 1 mol O2 i. e. 32 g of

Oq is prooduced then the heat released is = 196 Ket Thus, it 277 g of Og is proodu. ced then the heat weleased would be - 1964277 KJ 32 = 1696.6 kJ So, the heat released would be = 1696.6 ket)
Do not worry about the significant figures.If the answer do not match due to significant figures then please comment below......