17. (2.5 pts) Given the following reaction, 4 HCI(aq) + MnO2(s) MnCl2(aq) + Cl2(

Question

17. (2.5 pts) Given the following reaction, 4 HCI(aq) + MnO2(s) MnCl2(aq) + Cl2(g) + 2H2O(l) write the expression for the equilibrium constant, K. 18. (4.5 pts) Predict the direction of equilibrium shift for this reaction given the following disturbances to equilibrium. Circle the correct direction of the response to the change. 2NOBr(g) 2N6(g) + Br2(g) reactants reactants endothermic reaction Addition of Br2(g) Lowering the temperature Addition of NOBr(g) Removing NO (g) products products products products no change no ehange no change no change reactants reactants 19. (6 pts) Label the first reactant as an acid or base, then complete the following reactions: NH4+(aq) H2O( Acid + a. b. CO32-(aq) + H2O Acid Bex

Explanation / Answer

17)

Kc is defined as concentration of product by concentration of reactant with each concentration term raised to power that is equal to its stoichiometric coefficient in balanced equation

solid and liquid do not appear in K expression

So,

MnO2 and H2O will not appear in K expression

K = [MnCl2][Cl2]/[HCl]^4

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