Question

In: Chemistry

For the reaction A +B -->2C, suppose that you find that the rate=k[A][B]^2. Indicate how the...

For the reaction A +B -->2C, suppose that you find that the rate=k[A][B]^2. Indicate how the overall reaction rate will change if you... double the concentration of A double the concentration of B double the concentration of both A and B double the concentration of A and halve the concentration of B

Solutions

Expert Solution

A + B ------> 2C

rate =k [ A ] [ B ]^2

1) double the concentration of A

  

rate = k × 2 [ A ] [ B ]^2

= 2 k [ A ] [ B ] ^2

so , the reaction rate will be double

2) double the concentration of B

rate = k × [ A ] × (2 [ A ])^2

= 4 k [A ] [ B ]^2

So , the reaction rate will be 4 fold

3 ) double the concentration of both A and B

rate = k ×2 [ A ] × (2×[ B ])^2

= 8k[A][B]^2

so, the reaction rate will be 8 fold

4) double the concentratoon of A and halve the concentration of B

rate = k × 2 [A ] × ( 1/2 [ B ] )^2

= 2/4 × k × [ A ] [ B ]^2

= (1/2 ) k [ A ] [ B ]^2

so, the reaction rate will be 1/2 fold


Related Solutions

Consider the reaction A → 3 B + 2C for which the rate = k[A]. Calculate...
Consider the reaction A → 3 B + 2C for which the rate = k[A]. Calculate the rate constant,k, given that the initial concentration of A is 0.0800 M and after 60s the concentration of B is 0.027M.
For a reaction A +B → C, the experimental rate law is found to be R=k[A]1[B]1/2. Find the rate of the reaction when [A] = 0.5 M, [B] = 0.1 M and k=0.03
For a reaction A +B → C, the experimental rate law is found to be R=k[A]1[B]1/2. Find the rate of the reaction when [A] = 0.5 M, [B] = 0.1 M and k=0.03.
1. Assume that the rate law for a reaction is rate = k[A][B]^2 a) what is...
1. Assume that the rate law for a reaction is rate = k[A][B]^2 a) what is the overall order of the reaction? b) if the concentration of both A and B are doubled, how will this affect the rate of the reaction? c) how will doubling the concentration of A, while the concentration of B is kept constant, affect the value of k (assume that temperature does not change)? how is the rate affected? 2. It is found for the...
For the reaction A + B + 2C = 3D at 25 Celsius, the following initial...
For the reaction A + B + 2C = 3D at 25 Celsius, the following initial rate data were obtained: Experiment #1: [A] = 0.1M, [B] = 0.1M, [C] = 0.2M, Initial Rate of Formation for D = 4 e -4 M/min Experiment #2: [A] = 0.3M, [B] = 0.2M, [C] = 0.2M, Initial Rate of Formation for D = 1.2 e -3 M/min Experiment #3: [A] = 0.1M, [B] = 0.3M, [C] = 0.2M, Initial Rate of Formation for...
The gas phase reaction           2A + B →2C is   carried   out   isothermally   and   isobarically.   The   reaction  ...
The gas phase reaction           2A + B →2C is   carried   out   isothermally   and   isobarically.   The   reaction   is    first    order    in    A    and    first order in B. The feed is equal molar in A and B and the entering concentration of A is 0.5 mol/dm3. The specific reaction rate is k = 4.0 dm3/mol s. Write   the   rate   of   reaction,   –rA,   solely   as   a   function   of   conversion,    evaluating    all    parameters.
The gas phase reaction           2A + B →2C is   carried   out   isothermally   and   isobarically.   The   reaction  ...
The gas phase reaction           2A + B →2C is   carried   out   isothermally   and   isobarically.   The   reaction   is    first    order    in    A    and    first order in B. The feed is equal molar in A and B and the entering concentration of A is 0.5 mol/dm3. The specific reaction rate is k = 4.0 dm3/mol s. Write   the   rate   of   reaction,   –rA,   solely   as   a   function   of   conversion,    evaluating    all    parameters.
The initial rate of the reaction of species A and B A + 2 B →...
The initial rate of the reaction of species A and B A + 2 B → C was measured at a temperature of 25 °C for various initial concentrations of A and B. Data are collected in the table. Determine the rate equation from these data. What is the overall order of the reaction? What is the value of the rate constant? (Give the appropriate units of k.) Initial Concentrations, mol/L Initial Rate Experiment [A] [B] mol L-1 s-1 1...
1. The rate law for a given reaction is rate = k[NOBr]2. The rate constant is...
1. The rate law for a given reaction is rate = k[NOBr]2. The rate constant is 1.0 x 10-5 1/M∙s, and the initial concentration was 0.100 M. What is the first half-life of this reaction? A) 0.50 s B) 6.9 x 104 s C) 1.0 x 10-5 s D) 1.0 x 106 s E) None of these 2. The reaction SO2Cl2 SO2 + Cl2 is first order in SO2Cl2. If the concentration of SO2Cl2 after 198 s is 1.47 x...
For the reaction A + B 2C, Kc = 1.7 x 10?3 at room temperature If...
For the reaction A + B 2C, Kc = 1.7 x 10?3 at room temperature If the initial concentration of A = 2.24 M, B = 0.56 M, what is the equilibrium concentration of C? *Do you need to use the quadratic equation or can you assume that x is negligible?*
(a) Find ∆G◦ and K at 298.15 K for the gas-phase reaction 2 SO2(g) + O2(g)...
(a) Find ∆G◦ and K at 298.15 K for the gas-phase reaction 2 SO2(g) + O2(g) 2 SO3(g) (b) If a stoichiometric mixture of SO2 and O2 is allowed to come to equilibrium at 298.15 K and 1.000bar, find the partial pressure of SO2.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT