Question

In: Chemistry

Match how each of the following will change the rate of this forward reaction.

(I) Increase the rate (D) Decrease the rate

1. PCL5(g) + Energy ↔ CL2 (g) + PCl3(g)

a. (Answer_____) Add some PCl3

b. (Answer_____) Increase the Temp.

c. (Answer_____) Add some catalyst

d. (Answer_____) Remove Cl2

e. (Answer_____) Remove PCl3

2.

NH4 NO3(s) + energy <-> NH4+(aq) +NO3-(aq)

a. (Answer_____)Add some NH4NO3(s)

b. (Answer_____)Increase the temp.

c. (Answer_____)Add NaCI(s)

d. (Answer_____)Remove NH4+(aq)

e. (Answer_____)Add NO3-(aq)

Expert Solution

A/C to Le Chateliers's principle , if we change any properties (temperature, pressure and concentration) of equilibrium reaction , then the equilibrium shifts in direction to cancel that change .

1. PCl_{5 (g)} + Energy gives PCl_3(g) + Cl_2(g)

Addition of PCl3 Decreases the rate of forward reaction

Increasing he temp. increase the rate of reaction sine it is an example for endothermic reaction

Removal of both PCl3 and Cl2 increases therate of reaction, since to increase the conc. of products and to decrease the conc. of reactants

Addiiton of catalyst increase the reaction

2. NH₄NO_3(s) + Energy gives NH₄⁺_(aq) + NO₃^-_(aq)

Addition of NH4NO3 increases te rate of reaction

Increase in temp and removal of Nh4+ also increases the rate

Addition of NO3- decreases the rate

Addition of NaCl ha no effect, since its a salt it wont interrupt the rxn.

queen_honey_blossom answered 2 years ago

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