A. Kc is constant at given temperature
B. Kc is unaffected by change in concentration of reactants or products
C. Kc indicates the extent of reaction but not about the rate of reaction.
D. All of the above
Related Mcqs:
- The melting points and boiling points upto meddle of 3d- series ____________________?
A. increases
B. decreases
C. remain same
D. no regular trend - For which system does the equilibrium constant Kc has unit of (concentration)-1__________________?
A. N2+3H2 2NH3
B. H2+I2 2HI
C. 2NO2 N2H4
D. PCI5 PCI3+CI2 - For a reaction involving only gases at 25?C the equilibrium constant can be expressed in terms of molarity Ke or partial pressure Kp. Which is true about the numerical value of Kp ?
A. Kc is generally greaer than Kp
B. Kc is generally less than Kp
C. Kc is generally equal to Kp
D. Kc is equal to Kp if the total moles of reactants and products are equal - For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as___________________?
A. qp = qv
B. qp < qv
C. qp > qv
D. qp = qv / 2 - Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?
A. More strength of H-bonding
B. More strength of London forces
C. Less polarizability
D. All of the above - Melting points of VII-A group elements down the group ____________________?
A. Increase
B. Decrease
C. Remain constant
D. No regular trend - Which of the following will not change the concentration of ammonia at the equilibrium ?
A. Increase of pressure
B. Increase of volume
C. Addition of catalyst
D. Decrease of temperature - The unit of the rate constant (k) is same as that of rate of reaction________________?
A. First order reaction
B. Second order reaction
C. Zero order reaction
D. Third order reaction - Equilibrium state is achieved quickly by the addition of ________________?
A. reactants
B. acid
C. base
D. catalyst - Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called________________?
A. saturated solution
B. solubility
C. unsaturated solution
D. super saturated solution
