Question

What is the rate constant for the decomposition of ammonia in the given data?

a) 1.5×10−6mol L−1h−1
b) 2.0×10−3mol L−1h−1
c) 1.5×10−3mol L−1h−1
d) 3.0×10−3mol L−1h−1

Answer 1

The rate constant for the decomposition of ammonia is 1.5 × 10^-6 mol L^-1 h^-1. Option a

Step-by-step explanation:

The rate constant for the decomposition of ammonia can be determined by using the given data and applying the rate law equation. The rate law can be written as:

Rate = k[NH3]x

Given the concentration of ammonia ([NH3]) and the rate of the reaction, we can substitute these values into the rate law equation and solve for the rate constant (k).

Using the given data:

1.0 × 10-3 M, Rate = ?

2.0 × 10-3 M, Rate = ?

3.0 × 10-3 M, Rate = ?

By comparing the rates at each concentration, we can determine the value of the rate constant (k).

From the given options, the rate constant for the decomposition of ammonia is 1.5 × 10-6 mol L-1 h-1 (option a).