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Unit 5 - Part 2 - Hand-In Assignment 1. 1.00\times10^{-3} mol of PCl$_5$ gas is introduced into a 250.0mL flask at 284$^\circ$C. Equilibrium is established with the following reaction: PCl$_5$(g) $\rightleftharpoons$ PCl$_3$(g) + Cl$_2$(g) After equilibrium is reached, it is found that there are 9.65\times10$^{-5}$ mol of Cl$_2$. What is K$_{eq}$ for this reaction? (3 marks for completed ICE Box; 1 mark for K$_{eq}$ expression, 2 marks for K$_{eq}$, 1 mark for s.f.; 7 marks total) 2. At some temperature, K$_{eq}$ = 33.0 for the reaction H$_2$(g) + I$_2$(g) $\rightleftharpoons$ 2HI(g). If initially, [H$_2$] = 0.0600 M and [I$_2$] = 0.0600 M, what are all three equilibrium concentrations? (3 marks for completed ICE Box; 1 mark for K$_{eq}$ expression, 2 marks for work, 3 marks for EACH equilibrium concentration; 15 marks total)

          Unit 5 - Part 2 - Hand-In Assignment
1. 1.00\times10^{-3} mol of PCl$_5$ gas is introduced into a 250.0mL flask at 284$^\circ$C. Equilibrium is established
with the following reaction:
PCl$_5$(g) $\rightleftharpoons$ PCl$_3$(g) + Cl$_2$(g)
After equilibrium is reached, it is found that there are 9.65\times10$^{-5}$ mol of Cl$_2$. What is K$_{eq}$ for this
reaction? (3 marks for completed ICE Box; 1 mark for K$_{eq}$ expression, 2 marks for K$_{eq}$, 1 mark for s.f.; 7 marks total)
2. At some temperature, K$_{eq}$ = 33.0 for the reaction H$_2$(g) + I$_2$(g) $\rightleftharpoons$ 2HI(g). If initially, [H$_2$] = 0.0600 M
and [I$_2$] = 0.0600 M, what are all three equilibrium concentrations? (3 marks for completed ICE Box; 1 mark
for K$_{eq}$ expression, 2 marks for work, 3 marks for EACH equilibrium concentration; 15 marks total)

Unit 5 - Part 2 - Hand-In Assignment
1. 1.00×10^-3 mol of PCl5 gas is introduced into a 250.0mL flask at 284^∘C. Equilibrium is established
with the following reaction:
PCl5(g) ⇌ PCl3(g) + Cl2(g)
After equilibrium is reached, it is found that there are 9.65×10^-5 mol of Cl2. What is Keq for this
reaction? (3 marks for completed ICE Box; 1 mark for Keq expression, 2 marks for Keq, 1 mark for s.f.; 7 marks total)
2. At some temperature, Keq = 33.0 for the reaction H2(g) + I2(g) ⇌ 2HI(g). If initially, [H2] = 0.0600 M
and [I2] = 0.0600 M, what are all three equilibrium concentrations? (3 marks for completed ICE Box; 1 mark
for Keq expression, 2 marks for work, 3 marks for EACH equilibrium concentration; 15 marks total)

Added by Gene L.

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