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Part A Which of the following statements is true? If H 0 R for a chemical reacti

ID: 897865 • Letter: P

Question

Part A

Which of the following statements is true?

If H0R for a chemical reaction does not change appreciably with temperature, the heat capacities for reactants and products must be small.

A) If H0R for a chemical reaction does not change appreciably with temperature, the reactants and products must be in their standard reference states.

B) If H0R for a chemical reaction does not change appreciably with temperature, the difference between the heat capacities for reactants and products must be small.

C) If H0R for a chemical reaction does not change appreciably with temperature, the temperature must be close to 298.15 K.

D) Which of the following statements is true?

Answer Choices:

Please explain! Thank you!

C and D A and D B and D C only

Explanation / Answer

C) is true, since H0R is referenced to STP, that is, temperature 25ºC or 298.15 K; P = 1 atm and elemental species.

When you heat a species (change its temperature) you will have differencees between dH

All other are false