A Level Chemistry 9701/13/O/N/19 Q8

Question

Sodium burns in oxygen giving out heat energy and forming the compound Na2O. The equation for this reaction is shown.

Cher Questions Solution Bank Rumusan Jawapan SPM & IGCSE Questions Answers Solution

Which statement about the reaction is correct?

A ∆Ho for the reaction is equal to twice the bond energy of the Na–O bond.
B ∆Ho for the reaction is positive.
C The equation represents the standard enthalpy change of combustion of sodium.
D The equation represents the standard enthalpy change of formation of sodium oxide.

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    2021-06-26T16:08:06+08:00

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