Question

What is the rate of the reaction when the initial concentration of is 0.400 and that of is 0.265 ? Express your answer to three significant figures and include the appropriate units.

Answer 1

Answer:

Hi, I can't find the data to answer this question but I'm writing below about rate of reaction and how to calculate it.

Explanation:

Rate of reaction

Rate of reaction is the speed at which a chemical reaction proceeds. It is the measure of change in concentration of reactants or products in unit time.

For a reaction:            aA+bB⟶cC+dD

Rate= (−1/a ) (d[A]/dt) = (−1/b) (d[B]/ dt ) = (1/c) ( d[C]/ dt ) = (1/d) ( d[D]/dt )

Example

Take the example of following reaction of ammonia.

4NH3+3O2⟶2N2+6H2O

Rate of formation of N2 is 0.27 mol L–1 s–1(Given)

Step 1

From the equation, Δ[H2O] = 6/2 Δ[N2]

So the rate of formation of H2O = 3 × (0.27 mol L–1 s–1)

                                                      = 0.81 mol L–1 s–1

Step 2

4 moles of NH3 are consumed for every 2 moles of N2 formed, so the rate of disappearance of ammonia is

                                                =     2 × (0.27 mol L–1 s–1)

                                                = 0.54 mol L–1 s–1.