practiceexam1a

practiceexam1a - 1. Which of the following reactions leads...

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

View Full Document Right Arrow Icon
1. Which of the following reactions leads to a decrease in entropy of the system? __ A. N 2 (g) + 3H 2 (g) ' 2NH 3 (g) __ B. C(s) + H 2 O(g) ' CO(g) + H 2 (g) __ C. C 6 H 12 O 6 (s) + 6O 2 (g) ' 6CO 2 (g) + 6H 2 O(l) __ D. 2H 2 O(l) ' 2H 2 (g) + O 2 (g) __ E. PCl 5 (s) ' PCl 3 (l) + Cl 2 (g) 2. Which of the following processes would have a positive S r °? __ A. NH 3 (g) ' NH 3 (aq) __ B. H 2 (g) + I 2 (s) ' 2HI(g) __ C. Pb(s) + Br 2 (l) ' PbBr 2 (s) __ D. He(g, 1 atm) ' He(g, 10 atm) __ E. 2NO(g) ' N 2 O 4 (g) 3. List the following in order of decreasing molar entropy at 298 K. HCl(g), Cl 2 (g), HCl(aq), Cl(g) __ A. HCl(aq) > Cl(g) > HCl(g) > Cl 2 (g) __ B. Cl 2 (g) > HCl(g) > Cl(g) > HCl(aq) __ C. Cl(g) > Cl 2 (g) > HCl(g) > HCl(aq) __ D. Cl 2 (g) > Cl(g) > HCl(g) > HCl(aq) __ E. HCl(g) > HCl(aq) > Cl 2 (g) > Cl(g) 4. If the enthalpy of fusion of water at its normal melting point is 6.00 kJ @ mol —1 , calculate S ° for freezing 1 mole of water at this temperature. __ A.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

practiceexam1a - 1. Which of the following reactions leads...

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

View Full Document Right Arrow Icon
Ask a homework question - tutors are online