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LECTURE WEEK 14 : CHAPTER 6

Total questions: 11

Worksheet time: 22mins

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1.

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4 lines
2.

What is the equilibrium constant expression, Kc for the following reaction? 

 H2S(g)H2(g)+12S2(g)H_2S(g)⇌H_2(g)+\frac{1}{2}S_2(g)  

a)

 Kc=[H2][S2]Kc=[H_2][S_2]  

b)

 Kc=[H2][S2]12/ [H2S]Kc=[H_2][S_2]^{\frac{1}{2}}/\ [H_2S]  

c)

 Kc=[H2S] / [H2][S2]12Kc=[H_2S]\ /\ [H_2][S_2]^{\frac{1}{2}}  

d)

 Kc=[H2S]Kc=[H_2S]  

3.

What is the equilibrium constant expression, Kc for the following reaction? 

 CO(g)+H2O(g)  CO2(g)+H2(g)CO(g)+H_2O(g)\ ⇌\ CO_2(g)+H_2(g)  

a)

 Kc=[CO2][H2] / [H2O][CO]Kc=[CO_2][H_2]\ /\ [H_2O][CO]  

b)

 Kc=[CO][H2O] / [CO2][H2]Kc=[CO][H_2O]\ /\ [CO_2][H_2]  

c)

 Kc=[CO2][H2]Kc=[CO_2][H_2]  

d)

 Kc=[CO2] / [CO]Kc=[CO_2]\ /\ [CO]  

4.

Balance the equation, and choose the suitable Kc for the following reaction.

 N2(g) + 3H2(g)     NH3(g)N_2(g)\ +\ 3H_2(g)\ \ ⇌\ \ \ NH_3(g)  

a)

 Kc=[N2][H2]3/ [NH3]Kc=[N_2][H_2]^3/\ [NH_3]  

b)

 Kc=[NH3] / [N2][H2]3Kc=[NH_3]\ /\ [N_2][H_2]^3  

c)

 Kc=[N2][H2]3/ [NH3]2Kc=[N_2][H_2]^3/\ [NH_3]^2  

d)

 Kc=[NH3]2/ [N2][H2]3Kc=[NH_3]^2/\ [N_2][H_2]^3  

5.

Balance the equation, and choose the suitable Kc for the following reaction.

 CS2(g)+H2(g)  CH4(g)+H2S(g)CS_2(g)+H_2(g)\ ⇌\ CH_4(g)+H_2S(g)  

a)

 Kc=[CS2][H2]/[CH4][H2S]Kc=[CS_2][H_2]/[CH_4][H_2S]  

b)

 Kc=[CS2][H2]4 / [CH4][H2S]2Kc=[CS_2][H_2]^4\ /\ [CH_4][H_2S]^2  

c)

 Kc=[CH4][H2S]2 / [CS2][H2]4Kc=[CH_4][H_2S]^2\ /\ [CS_2][H_2]^4  

d)

 Kc=[CH4][H2S] / [CS2][H2]Kc=[CH_4][H_2S]\ /\ [CS_2][H_2]  

6.

Balance the equation, and choose the suitable Kc for the following reaction.

 NO(g)  N2O(g)+NO2(g)NO(g)\ ⇌\ N_2O(g)+NO_2(g)  

a)

 Kc=[NO] / [N2O][NO2]Kc=[NO]\ /\ [N_2O][NO_2]  

b)

 Kc=[NO]2/ [N2O][NO2]Kc=[NO]^2/\ [N_2O][NO_2]  

c)

 Kc=[N2O][NO2] / [NO]2Kc=[N_2O][NO_2]\ /\ [NO]^2  

d)

 Kc=[N2O][NO2] / [NO]3Kc=[N_2O][NO_2]\ /\ [NO]^3  

7.

Balance the equation, and choose the suitable Kc for the following reaction.

 NH3(g)+O2(g)  NO(g)+H2O(g)NH_3(g)+O_2(g)\ ⇌\ NO(g)+H_2O(g)  

a)

 Kc=[NO]2[H2O]3 / [NH3]2[O2]5/2Kc=[NO]^2[H_2O]^3\ /\ [NH_3]^2[O_2]^{5/2}  

b)

 Kc=[NH3]2[O2]5/2 / [NO]2[H2O]3Kc=[NH_3]^2[O_2]^{5/2}\ /\ [NO]^2[H_2O]^3  

c)

 Kc=[NO]2[H2O]3 / [NH3]2[O2]5Kc=[NO]^2[H_2O]^3\ /\ [NH_3]^2[O_2]^5  

d)

 Kc=[NH3]2[O2]5 / [NO]2[H2O]3Kc=[NH_3]^2[O_2]^5\ /\ [NO]^2[H_2O]^3  

8.

Balance the equation, and choose the suitable Kp for the following reaction.

 C3H8(g)+O2(g)  CO2(g)+H2O(g)C_3H_8(g)+O_2(g)\ ⇌\ CO_2(g)+H_2O(g)  

a)

 Kp=(PCO2)(PH2O) / (PC3H8)(PO2)Kp=(P_{CO_2})(P_{H_2O})\ /\ (P_{C_3H_8})(P_{O_2})  

b)

 Kp=(PCO2)3(PH2O)8 / (PC3H8)(PO2)7Kp=(P_{CO_2})^3(P_{H_2O})^8\ /\ (P_{C_3H_8})(P_{O_2})^7  

c)

 Kp=(PCO2)3(PH2O)4 / (PC3H8)(PO2)5Kp=(P_{CO_2})^3(P_{H_2O})^4\ /\ (P_{C_3H_8})(P_{O_2})^5  

d)

 Kp=(PC3H8)(PO2) / (PCO2)(PH2O)Kp=(P_{C_3H_8})(P_{O_2})\ /\ (P_{CO_2})(P_{H_2O})  

9.

Balance the equation, and choose the suitable Kp for the following reaction.

 N2O5(g)    NO2(g) + O2(g)N_2O_5(g)\ \ ⇌\ \ NO_2(g)\ +\ O_2(g)  

a)

 Kp=(PN2O5) / (PNO2)2(PO2)1/2Kp=(P_{N_2O_5})\ /\ (P_{NO_2})^2(P_{O_2})^{1/2}  

b)

 Kp=(PNO2)2(PO2)1/2 / (PN2O5)Kp=(P_{NO_2})^2(P_{O_2})^{1/2}\ /\ (P_{N_2O_5})  

c)

 Kp=(PNO2)2(PO2) / (PN2O5)Kp=(P_{NO_2})^2(P_{O_2})\ /\ (P_{N_2O_5})  

d)

 Kp=(PN2O5) / (PNO2)2(PO2)Kp=(P_{N_2O_5})\ /\ (P_{NO_2})^2(P_{O_2})  

10.

Balance the equation, and choose the suitable Kp for the following reaction.

 NO(g) + O2(g)    NO2(g)NO(g)\ +\ O_2(g)\ \ ⇌\ \ NO_2(g)  

a)

 Kp=(PNO2) / (PNO)(PO2)2Kp=(P_{NO_2})\ /\ (P_{NO})(P_{O_2})^2  

b)

 Kp=(PNO2) / (PNO)(PO2)1/2Kp=(P_{NO_2})\ /\ (P_{NO})(P_{O_2})^{1/2}  

c)

 Kp=(PNO)(PO2)1/2 / (PNO2)Kp=(P_{NO})(P_{O_2})^{1/2}\ /\ (P_{NO_2})  

d)

 Kp=(PNO)(PO2)2 / (PNO2)Kp=(P_{NO})(P_{O_2})^2\ /\ (P_{NO_2})  

11.

Choose the suitable Kp for the following reaction.

 HF(aq)    H+(aq)   +  F(aq)HF(aq)\ \ ⇌\ \ H^+(aq)\ \ \ +\ \ F^-(aq)  

a)

 Kp=(PH+)(PF) / (PHF)Kp=(P_{H^+})(P_{F^-})\ /\ (P_{HF})  

b)

 Kp=(PH+)(PF)Kp=(P_{H^+})(P_{F^-})  

c)

 Kp=1 / (PHF)Kp=1\ /\ (P_{_{HF}})  

d)

 No KpNo\ K_p