For the net reaction: 2AB + 2C → A2 + 2BC, the following slow first steps have been proposed. 2C + AB → AC + BC 2AB → A2 + 2B C + AB → BC + A AB → A + B What rate law is predicted by each of these steps? C

Answer : The rate law expression for the following reactions are:

(1)

(2)

(3)

(4)

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

The general reaction is:

The general rate law expression for the reaction is:

where,

a = order with respect to A

b = order with respect to B

R = rate  law

k = rate constant

[A] and [B] = concentration of A and B reactant

Now we have to determine the rate law for the given reaction.

(1) The balanced equations will be:

In this reaction, C and AB are the reactants.

The rate law expression for the reaction is:

(2) The balanced equations will be:

In this reaction, AB is the reactant.

The rate law expression for the reaction is:

(3) The balanced equations will be:

In this reaction, C and AB are the reactants.

The rate law expression for the reaction is:

(4) The balanced equations will be:

In this reaction, AB is the reactant.

The rate law expression for the reaction is:

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).