Effect of Catalyst

Q. What is chemical potential energy?

Q. In a chemical equilibrium the rate constant of thebackward reaction is 7.5 x 104 and the equilibriumconstant is 1.5. So the rate constant of the forwardareaction is(1) 2 x 10-3(2) 15 x 10-(3) 1.125 x 10-3(4) 9.0 x 10

Q.

The equilibrium constant of the reaction 2HI ⇌ H₂ + I₂ is 0.25, the equilibrium constant of the reaction H₂ + I₂ ⇌ 2HI would be:

1. 3.0

2. 2.0

3. 4.0

4. 1.0

Q. Sum of nodal planes of HOMO of O2+ and N2+ is

Q.

A catalyst
(IIT-JEE, 1984)

1. Increases the average kinetic energy fo the reacting molecules.

2. Decreases the activation energy

3. Alters the reaction mechanism

4. Increases the frequency of the collisions of the reacting species

Q.

define equilibrium constant?

Q. For the equilibrium
NH3=1/2N2+3/2H2
The equilibrium constant is 5.What is the equilibrium constant for the equilibrium
N2+3H2=2NH3

Q.
The intermediate formed in the above reaction is:

1. 
2. 
3. 
4. 

Q. 49.Given that the equilibrium constant for the reaction3(g)as a value of 278 at a particular temperature.What is the value of the equilibrium constant forthe following reaction at the same temperature?AIPMT 2012\rbrack2SOsg)SO29)22(1) 1.8 x 10-3(2) 3.6×10-3(3) 6.0 x 10-2814 1.3 x 10-5KS

Q. 56 g of nitrogen and 20 g of hydrogen reacts in a closed vessel to form ammonia. Maximum amount of ammonia produced in this reaction is

Q.

The energy of activation for a reaction at $300K$ is $100kJmo{l}^{-1}$. For same concentration, presence of a catalyst lowers the energy of activation by $75\%$. Calculate the value of
${\log }_{10}\left(\frac{r_2}{r_1}\right)$
$r_2=\text{rate in presence of catalyst}$
$r_1=\text{rate in absence of catalyst}$

1. 13.06
2. 10.02
3. 7.94
4. 3.21

Q. If the value of an equilibrium cons†an t for a particular reaction is 1.6 × 1012, then at equilibrium the system will contain

Q. What is chemical potential energy?

Q. Equilibrium constant for the reaction is 4.0, then what will be the equilibrium constant for the reverse reaction

Q. Equilibrium constant for a reaction is 10 . What will be the equilibrium constant for reverse reaction.

Q. for the reaction H2 + I2 gives to the equilibrium constant KP changes with

Q. what is the ratio of Fe2+ and Fe3+ in Fe0.94S1

Q. .For the following hypothetical reaction, the equilibrium constant(Kc) value is given as: A ⇌ B ; Kc = 2.0 The equilibrium constant (K’c) for the reaction B ⇌ A is