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Which of the constant-pressure processes shown here has

Chapter 6, Problem 3RC

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QUESTION:

Which of the constant-pressure processes shown here has the smallest difference between \(\Delta U\) and \(\Delta H\)?

(a) \(\text { water } \rightarrow \text { water vapor }\)

(b) \(\text { water } \rightarrow \text { ice }\)

(c) \(\text { ice } \rightarrow \text { water vapor }\)

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QUESTION:

Which of the constant-pressure processes shown here has the smallest difference between \(\Delta U\) and \(\Delta H\)?

(a) \(\text { water } \rightarrow \text { water vapor }\)

(b) \(\text { water } \rightarrow \text { ice }\)

(c) \(\text { ice } \rightarrow \text { water vapor }\)

ANSWER:

Step 1 of 4

At the constant pressure the relation between energy change () and enthalpy of a reaction ()  is as follows.

In the above relation  is indicated by the change in volume of gaseous products and gaseous reactants.

 

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