[latex] K_c [/latex]

Last updated: 06/12/2019

FREE Sample Course A-Level Chemistry [latex] K_c [/latex]

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Question 1 of 20

1. Question
Write a $K_c$ equation for the following reaction. $H_2(g) + O_2(g) -> H_2O(l)$
- [latex] [H_2O] / [H_2] [O_2] [/latex]
- [latex] [H_2] [O_2] / [H_2O] [/latex]
- [latex] [H_2O]^2 / [H_2] [O_2] [/latex]
- [latex] [H_2] [O_2] / [H_2O]^2 [/latex]
Question 2 of 20

2. Question
What is the symbol for the equilibrium constant?
- [latex] K_c [/latex]
- [latex] K_p [/latex]
- [latex] K_a [/latex]
- [latex] K_w [/latex]
Question 3 of 20

3. Question
Write a $K_c$ equation for the following reaction. $2C_2H_6(aq) + O_2(g) -> 4CO_2(g) + 6H_2O(l)$
- [latex] [H_2O]^6 [CO_2]^4 / [C_2H_6]^2 [O_2]
- [latex] [H_2O] [CO_2]^4 / [C_2H_6]^2 [O_2]
- [latex] [H_2O] [CO_2] / [C_2H_6]^2 [O_2]
- [latex] [H_2O] [CO_2] / [C_2H_6] [O_2]
Question 4 of 20

4. Question
What reaction conditions are needed to work out the equilibrium constant?
- All reactants and products in the same physical state
- All reactants and products in different physical states
- Concentrations of reactants and products are the same
- Reaction is held at a constant pressure and temperature
Question 5 of 20

5. Question
Write a $K_c$ equation for the following reaction. $2HCl(aq) + Zn(s) -> ZnCl_2(s) + H_2(g)$
- [latex] [H_2] [ZnCl_2] / [HCl]^2 [Zn] [/latex]
- [latex] [HCl]^2 [Zn] / [H_2] [ZnCl_2][/latex]
- [latex] [H_2] [ZnCl_2] / [HCl] [Zn] [/latex]
- [latex] [HCl] [Zn] / [H_2] [ZnCl_2][/latex]
Question 6 of 20

6. Question
In order to find the equilibrium constant, $K_c$ , what piece of information should be used?
- Concentrations
- Mole fractions
- Temperature
- Pressure
Question 7 of 20

7. Question
Write a $K_c$ equation for the following reaction. $2NaCl(s) + F_2(g) -> 2NaF(s) + Cl_2(g)$
- [latex] [NaF]^2 [Cl_2] / [NaCl]^2 [F_2] [/latex]
- [latex] [NaCl]^2 [F_2] / [NaF]^2 [Cl_2][/latex]
- [latex] [NaF] [Cl_2] / [NaCl] [F_2] [/latex]
- [latex] [NaCl] [F_2] / [NaF] [Cl_2][/latex]
Question 8 of 20

8. Question
Within a $K_c$ expression, which part of the reaction should be at the top of the equation?
- Products
- Reactants
- Compounds with the highest number of moles
- Compounds with the lowest number of moles
Question 9 of 20

9. Question
Write a $K_c$ equation for the following reaction. $CuCl_2(s) + 2AgNO_3(aq) -> Cu(NO_3)_2(aq) + 2AgCl(s)$
- [latex] [AgCl]^2 [Cu(NO_3)_2] / [AgNO_3]^2 [CuCl_2] [/latex]
- [latex] [AgNO_3]^2 [CuCl_2] / [AgCl]^2 [Cu(NO_3)_2][/latex]
- [latex] [AgCl] [Cu(NO_3)_2] / [AgNO_3] [CuCl_2] [/latex]
- [latex] [AgNO_3] [CuCl_2] / [AgCl] [Cu(NO_3)_2][/latex]
Question 10 of 20

10. Question
Within a $K_c$ expression, which part of the reaction should be at the bottom of the equation?
- Reactants
- Products
- Compounds with the highest number of moles
- Compounds with the lowest number of moles
Question 11 of 20

11. Question
Write a $K_c$ equation for the following reaction. $Na_2SO_4(aq) + SrCl(aq) -> 2NaCl(aq) + SrSO4(aq)$
- [latex] [NaCl]^2 [SrSO_4] / [Na_2SO_4] [SrCl_2] [/latex]
- [latex] [Na_2SO_4] [SrCl_2] / [NaCl]^2 [SrSO_4][/latex]
- [latex] [NaCl] [SrSO_4] / [Na_2SO_4] [SrCl_2] [/latex]
- [latex] [Na_2SO_4] [SrCl_2] / [NaCl] [SrSO_4][/latex]
Question 12 of 20

12. Question
Write a $K_c$ equation for the following reaction. $N_2(g) + 3H_2(g) -> 2NH_3(g)$
- [latex] [NH_3]^2 / [N_2] [H_2]^3 [/latex]
- [latex] [N_2] [H_2]^3 / [NH_3]^2 [/latex]
- [latex] [NH_3] / [N_2] [H_2] [/latex]
- [latex] [N_2] [H_2] / [NH_3] [/latex]
Question 13 of 20

13. Question
Write a $K_c$ equation for the following reaction. $2NaOH(aq) + FeCl_2(aq) -> 2NaCl(s) + Fe(OH)_2(aq)$
- [latex] [NaCl]^2 [Fe(OH)_2] / [NaOH]^2 [FeCl_2] [/latex]
- [latex] [NaOH]^2 [FeCl_2] / [NaCl]^2 [Fe(OH)_2][/latex]
- [latex] [NaCl] [Fe(OH)_2] / [NaOH] [FeCl_2] [/latex]
- [latex] [NaOH] [FeCl_2] / [NaCl] [Fe(OH)_2][/latex]
Question 14 of 20

14. Question
Write a $K_c$ equation for the following reaction. $2NaClO_3(aq) -> 2NaCl(s) + 3O_2(g)$
- [latex] [NaCl]^2 [O_2]^3 / [NaClO_3]^2 [/latex]
- [latex] [NaClO_3]^2 / [NaCl]^2 [O_2]^3 [/latex]
- [latex] [NaCl] [O_2] / [NaClO_3] [/latex]
- [latex] [NaClO_3] / [NaCl] [O_2] [/latex]
Question 15 of 20

15. Question
Write a $K_c$ equation for the following reaction. $3F_2(g) + 2FeI_3(aq) -> 3I_2(g) + 2FeF_3(aq)$
- [latex] [FeF_3]^2 [I_2]^3 / [FeI_3]^2 [F_2]^3 [/latex]
- [latex] [FeI_3]^2 [F_2]^3 / [FeF_3]^2 [I_2]^3 [/latex]
- [latex] [FeF_3] [I_2] / [FeI_3] [F_2] [/latex]
- [latex] [FeI_3] [F_2] / [FeF_3] [I_2] [/latex]
Question 16 of 20

16. Question
Write a $K_c$ equation for the following reaction. $2NaI(aq) + Cl_2(g) -> 2NaCl(s) + I_2(aq)$
- [latex] [NaCl]^2 [l_2] / [Nal]^2 [Cl_2] [/latex]
- [latex] [Nal]^2 [Cl_2] / [NaCl]^2 [l_2][/latex]
- [latex] [NaCl] [l_2] / [Nal] [Cl_2] [/latex]
- [latex] [Nal] [Cl_2] / [NaCl] [l_2][/latex]
Question 17 of 20

17. Question
Write a $K_c$ equation for the following reaction. $Fe(NO_3)_3(aq) + A(s) -> Al(NO_3)_3(aq) + Fe(s)$
- [latex] [Fe] [Al(NO_3)_3] / [Al] [Fe(NO_3)_3] [/latex}
- [latex] [Al] [Fe(NO_3)_3] / [Fe] [Al(NO_3)_3][/latex}
- [latex] [Al(NO_3)_3] / [Al] [Fe(NO_3)_3] [/latex}
- [latex] [Al] [Fe(NO_3)_3] / [Al(NO_3)_3][/latex}
Question 18 of 20

18. Question
Write a $K_c$ equation for the following reaction. $4Al(s) + 3O_2(g) -> 2Al_2O_3(aq)$
- [latex] [Al_2O_3]^2 / [Al]^4 [O_2]^3 [/latex]
- [latex] [Al]^4 [O_2]^3 / [Al_2O_3]^2 [/latex]
- [latex] [Al_2O_3] / [Al] [O_2] [/latex]
- [latex] [Al] [O_2] / [Al_2O_3] [/latex]
Question 19 of 20

19. Question
Write a $K_c$ equation for the following reaction. $Mg(OH)_2(aq) + 2HNO_3(aq) -> Mg(NO_3)_2(aq) + 2H_2O(l)$
- [late] [H_2O]^2 [Mg(NO_3)2] / [HNO_3]^2 [Mg(OH)_2] [/latex]
- [late] [HNO_3]^2 [Mg(OH)_2] / [H_2O]^2 [Mg(NO_3)2][/latex]
- [late] [H_2O] [Mg(NO_3)2] / [HNO_3] [Mg(OH)_2] [/latex]
- [late] [HNO_3] [Mg(OH)_2] / [H_2O] [Mg(NO_3)2][/latex]
Question 20 of 20

20. Question
What is $K_c$ ?
- Equilibrium constant
- Acid dissociation constant
- Pressure constant
- Water constant