In rate expression the concentration of reactants is negative. It shows_______________?

Related Mcqs:

1. Rate of reaction when concentration of reactants are taken as unity is called_________________?

   A. Arrhenius constant
   B. Molecularity
   C. Specific rate constant
   D. Ideal rate constant

2. At start of reaction the concentration of reactants is_______________?

   A. high
   B. low
   C. according to Kc
   D. constant

3. Negative log of mular concentration of H+ ions is called___________________?

   A. pH
   B. pOH
   C. pKa
   D. pKw

4. When catalysts and reactants are in more than one phase it is________________?

   A. Homogeneous catalysis
   B. Heterogeneous catalysis
   C. Catalysis
   D. Ea

5. Which one of the following reactants will be required to form straight chain alcohol by using Grignard reagent________________?

   A. formaldehyde
   B. ketone
   C. ethylene epoxide
   D. both A & C

6. Rate expression for ammonia synthesis is___________________?

   A. Kc=x2/(a-x)(b-x)
   B. Kc=x2/v(a-x)
   C. Kc=4×2/(a-2x)2(b-x)
   D. Kc=4x2v2/(a-x)(b-3x)3

7. Rate of enzymatic reaction is directly proportional to the concentration of___________________?

   A. Enzyme
   B. Substrate
   C. Enzyme and substrate
   D. Enzyme and product

8. When a graph is plotted between 1/T on X-axis and log k on y-axis a straight line is obtained with a negative slope which has two end in__________________?

   A. I and II quadrant
   B. II and III quadrant
   C. III and IV quadrant
   D. II and IV quadrant

9. For 3rd order reaction the hhalf life is inversely proportional to initial concentration of reactants__________________?

   A. Single
   B. Square
   C. Cube
   D. Raise to power four

10. Sum of exponents of molar concentration is called___________________?

    A. Order of reaction
    B. Molecularity
    C. Rate of reaction
    D. Average of reaction