11) The pH of mon concentration is 0.010M a monoprotio acid solution is 6.20. Ca

Question

11) The pH of mon concentration is 0.010M a monoprotio acid solution is 6.20. Calculate the K, for the cid. The inia 12) What is the pH of o.30 M ammonia solution? K of Ammonia is 1.8 x10 NII, (aq) + H2O() NIli (aq) + OH-(aq) (l) Extra credit problems Indicate if the following statement is True (T) or false (F).- 10k each # | Statement The equilibrium constant, Ke for the 1 2 Lewis acid definition are: A base is an electron pair acceptor and an acid are an electron pair donor 3 Salts derived from a strong acid and a weak base such as NHCi dissoives in water and the solution reverse reaction is the negative of Kc for the forward reaction becomes acidic. 4 The rate of a bimolecular reaction is affected by concentrations of reactants, presence of a catalyst but 5 Concentration of a pure solid and a liquid can be omitted from the equilibnium equation as the 6 The equilibrium constant is temperature sensitive not by temperature. concentrations ratio of these equal to 1 7 The reaction rates will be affected by the magnitude of the activation energy of a reaction 8 The rate determining step is the fastest step of multistep reactions 9 The overall reaction order for an elementary reaction always equals its molecularity, However, the overall reaction rate for multistep reactions can only be determined based on experimental data. 10 Addition of a catalyst to a reaction mixture increases rate constant but it does not alter the composition of an equilibrium mixture.

Explanation / Answer

(1)

False, because Kc of the inverse reaction is the reciprocal of the Kc for the forward reaction

(2)

False, Lewis acid is electron pair acceptor

(3)

True

(4)

False, because Kc depends on temperature

(5)

True

(6)

True

(7)

True

(8)

False, rate determinig step is the slowest step in the reaction

(9)

True

(10)

False, catalyst doesn't change the Kc value

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