{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

PL%20Worksheet%20130

PL%20Worksheet%20130 - Formation H f The formula was the...

This preview shows pages 1–2. Sign up to view the full content.

PL Worksheet 13 20.1 Spontaneity 1. Define the term spontaneous change . 2. Give an example of a spontaneous change. 3. On page 884 of your text, the book discusses the term microstates. In your own words, describe what is meant by microstates. Describe a sample that would have very few microstates and describe a sample that would have very many microstates. 4. Describe the relationship between the number of microstates and the entropy of a sample. 5. Make predictions for each of the following as far as whether the process would increase or decrease entropy: A) Liquid water on a stove is evaporated. B) 2.00 mol of NO 2 gas is combined to form 1.00 mol of N 2 O 4 gas C) Spilled salt crystals are placed into one pile D) All the leaves on a tree fall off 20.2 Change in Entropy 6. In General Chemistry I, you calculated the H of a reaction by using values for the Heats of

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Formation, H f . The formula was the products minus reactants, and coefficients were used as multipliers. You can perform the same operation to find the change in entropy of a reaction. The only difference, entropy is described with ∆ S and each compound is described with S . Solve for the ∆ S of each reaction below: Compound S Compound S I 2 ( s ) 116.14 I 2 ( g ) 260.58 I − ( aq ) 109.40 LiI ( s ) 85.80 NO 2 ( g ) 239.9 Li + ( aq ) 14 N 2 O 4 ( g ) 304.3 Li + ( aq ) + I − ( aq ) LiI ( s ) I 2 ( s ) I 2 ( g ) 2 NO 2 ( g ) N 2 O 4 ( g ) 7. Did you answer to the last reaction in number 6 match your prediction in question 5B? 8. Does a positive sign for entropy mean more microstates are possible or fewer? Use an answer from question 6 to support your answer....
View Full Document

{[ snackBarMessage ]}

Page1 / 2

PL%20Worksheet%20130 - Formation H f The formula was the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online