Which of the following will be affected by the addition of a catalyst to a chemical reaction?
a)the value of the reverse rate constant, kr
b)the magnitude of the equilibrium constant
c)the value of the forward rate
d)ΔHo
e)the value of the forward rate constant, kf
f)ΔSo
g)ΔGo
h)the value of the reverse rate
i)the value of the ratio kf/kr
is it c, f, g, h
I agree with c.
I don't know about f.
I don't agree with g or h.
What about e? i?
the value of the forward rate constant (kf), the value of the reverse rate constant (kr), the value of the forward rate, and the value of the reverse rate
its kf,kr, the value of forward rate and reverse rate.
im having this problem in 2013 and yeup. it's A, C, E, H
To determine which of the given options will be affected by the addition of a catalyst to a chemical reaction, we need to understand the role of a catalyst in a reaction.
A catalyst is a substance that increases the rate of a chemical reaction by lowering the activation energy required for the reaction to occur. It does not participate in the reaction itself and is not consumed during the reaction.
Now, let's evaluate each option to see its relationship with a catalyst:
a) the value of the reverse rate constant, kr - The addition of a catalyst can affect both the forward and reverse rates of the reaction, but it does not change the value of the rate constants. So, the value of kr will not be affected by the addition of a catalyst.
b) the magnitude of the equilibrium constant - The equilibrium constant, Kc or Kp, is a ratio of the concentrations or pressures of the products to the reactants at equilibrium. The addition of a catalyst does not affect the position of equilibrium, only the rate at which equilibrium is achieved. Therefore, the magnitude of the equilibrium constant will remain unchanged.
c) the value of the forward rate - Adding a catalyst can increase the rate of the forward reaction by lowering the activation energy, so the value of the forward rate will indeed be affected.
d) ΔHo - ΔHo (enthalpy change) is a thermodynamic property that represents the heat transferred during a reaction at constant pressure. The addition of a catalyst does not affect the enthalpy change of a reaction, as it only influences the reaction rate. Therefore, ΔHo remains unaffected.
e) the value of the forward rate constant, kf - The addition of a catalyst increases the rate of the forward reaction, so the value of the forward rate constant, kf, will be affected.
f) ΔSo - ΔSo (entropy change) is a thermodynamic property that represents the change in the degree of disorder during a reaction. The addition of a catalyst does not affect the entropy change, as it only influences the reaction rate. Therefore, ΔSo remains unaffected.
g) ΔGo - ΔGo (standard Gibbs free energy change) is a thermodynamic property that indicates the feasibility of a reaction under standard conditions. The addition of a catalyst does not affect the Gibbs free energy change of a reaction, as it only influences the reaction rate. Therefore, ΔGo remains unaffected.
h) the value of the reverse rate - Adding a catalyst can affect both the forward and reverse rates of a reaction by lowering the activation energy. So, the value of the reverse rate will indeed be affected.
i) the value of the ratio kf/kr - As mentioned earlier, the value of both kf and kr will be affected by the addition of a catalyst. Therefore, the value of the ratio kf/kr will be influenced.
Based on the explanation above, the correct options that will be affected by the addition of a catalyst are: c) the value of the forward rate, h) the value of the reverse rate, e) the value of the forward rate constant, and i) the value of the ratio kf/kr.