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Reaction Energy quick check

A quick check of 3 questions. After you submit, each question shows the right answer and why.

3 of 8 questions, Advanced level. Aimed at the Advanced level, your current depth. Questions you have not answered yet come first.

Show all 8 questions

ScientistQuestion 1 of 3

Forming liquid water from hydrogen and oxygen has ΔH°f = −285.83 kJ/mol. What is ΔH, in kJ/mol, for splitting one mole of liquid water back into hydrogen and oxygen?

AdvancedQuestion 2 of 3

According to the Arrhenius equation k = A·exp(−Eₐ/RT), which change increases the rate constant?

AdvancedQuestion 3 of 3

Using ΔfH°(CO₂, g) = −393.51, ΔfH°(H₂O, l) = −285.83 and ΔfH°(CH₄, g) = −74.6 kJ/mol (O₂ = 0), calculate ΔH° for CH₄ + 2O₂ → CO₂ + 2H₂O(l), in kJ/mol, to one decimal place.