Which of the following statements about chemical equilibrium are not
true?
a the equilibrium constant is dependent on temperature.
b the equilibrium constant is independent of the concentrations of
reactants or products at certain reaction conditions.
c the initial concentrations of reactants and products will affect the
equilibrium position.
d when starting with only reactants, only the forward reaction will take
place until equilibrium is reached.
e when starting with only the products, the reverse reaction rate will exceed
the forward reaction rate until equilibrium is reached.

B. The equilibrium constant is independent of the concentrations of

reactants or products at certain reaction conditions.

D. When starting with only reactants, only the forward reaction will take

place until equilibrium is reached.

Explanation:

Hello,

For the B. option, remember that law of mass action states that the equilibrium constant always depends on the concentration or at least one variable defining the amount of substance.

For the D option, remember that the particles are in constant motion so there is going to be a progressive increasing in the product's concentration which also will promote the reverse reaction until equilibrium is reached.

Best regards.

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

c, liquids evaporate, creating a gas