🧪 TheChemSolverUSNCO / General Chemistry
ThermodynamicsMCQ

The standard enthalpies of combustion of formaldehyde, H2C=O(g), and formic acid, HCOOH(l), are –563Thermodynamics Chemistry Question

Question

The standard enthalpies of combustion of formaldehyde, H2C=O(g), and formic acid, HCOOH(l), are –563 and –270 kJ•mol–1 respectively. What is ∆H˚ for the following reaction?
H2C=O(g) + 1/2 O2(g) → HCOOH(l)

A.

–833 kJ•mol–1

B.

–293 kJ•mol–1

✓ Correct
C.

293 kJ•mol–1

D.

833 kJ•mol–1

💬
Still have doubts about this question?
Practice more questions like this, completely free.

Practice USNCO / General Chemistry questions like this — free

4,000+ questions across AP Chemistry, USNCO, and IChO — all free, no signup required.