The reaction, 2 no(g) + cl2(g) → 2 nocl(g) was studied at -10oc. the following results were obtained. [no] (m) [cl2] (m) initial rate (m min-1) 0.10 0.10 0.18 0.10 0.20 0.36 0.20 0.20 1.45 a) what is the rate law? b) what is the value of the rate constant? (include correct units)

Answer :

(a) The rate law becomes:

(b) The value of the rate constant 'k' for this reaction is

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.

For the given chemical equation:

Rate law expression for the reaction:

where,

a = order with respect to

b = order with respect to

Expression for rate law for first observation:

....(1)

Expression for rate law for second observation:

....(2)

Expression for rate law for third observation:

....(3)

Dividing 1 from 2, we get:

Dividing 2 from 3, we get:

(a) Thus, the rate law becomes:

(b) Now, calculating the value of 'k' by using any expression.

Putting values in equation 1, we get:

Hence, the value of the rate constant 'k' for this reaction is

indium, and thallium have three electrons i think

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).