Question

Which statement about the following reaction is correct?

CaO (s) + H2O (l) yields Ca(OH) 2 (s) deltaH = -65.2 kJ

65.2 kJ of heat is absorbed for every one of CaO that reacts.

130 kJ of heat is released for every mole of H2O that reacts.

32.6 kJ of heat is released for every 0.5 mole of CaO that reacts.

16.3 kJ of heat is absorbed for every 0.5 moles of H2O that reacts.

Answer 1

Is the deltaH on the product or reactant side?

Answer 2

reactant side

Answer 3

When heat is on the reactant side its being absorbed so its etween the first and last option

Answer 4

*between not etween sorry

Answer 5

32.6 kJ of heat is released for every 0.5 mole of CaO that reacts.

Answer 6

-65.2 kJ is released for one mole its 1/2 is released for 0.5 moles of CaO

Answer 7

-ve vlue in front of delta H means exothermic reaction heat is liberated

Answer 8

I didn't even notice the (-) in front of the delta H so when he said it was on the reactant side I thought endothermic instead