Rate of a Chemical Reaction

What is rate of reaction?

From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constants.

H₂O₂ (aq) + 3 I⁻ (aq) + 2 H⁺ → 2 H₂O (l) + `I_3^-` Rate = k[H₂O₂][I⁻]

In a reaction, 2A → Products, the concentration of A decreases from 0.5 mol L⁻¹ to 0.4 mol L⁻¹ in 10 minutes. Calculate the rate during this interval?

The decomposition of dimethyl ether leads to the formation of CH₄, H₂ and CO and the reaction rate is given by

Rate = k [CH₃OCH₃]^3/2 .The rate of reaction is followed by increase in pressure in a closed vessel, so the rate can also be expressed in terms of the partial pressure of dimethyl ether, i.e., `Rate = k(p_(CH_3OCH_3))^(3/2)` 

The rate of the chemical reaction doubles for an increase of 10 K in absolute temperature from 298 K. Calculate E_a.

From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constants.

3 NO(g) → N₂O (g) Rate = k[NO]²

From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constants.

C₂H₅Cl(g) → C₂H₄(g) + HCl(g) Rate = k [C₂H₅Cl]

For the reaction: 2A + B → A₂B  the rate = k[A][B]² with k = 2.0 × 10⁻⁶ mol⁻² L² s⁻¹. Calculate the initial rate of the reaction when [A] = 0.1 mol L⁻¹, [B] = 0.2 mol L⁻¹. Calculate the rate of reaction after [A] is reduced to 0.06 mol L⁻¹.