A. dynamic state
B. static state
C. free state
D. unidirectional state
Related Mcqs:
- Equilibrium state is achieved quickly by the addition of ________________?
A. reactants
B. acid
C. base
D. catalyst - 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 - 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 - When sparingly soluble salt is in equilibrium with molar concentration of its oppositely charged ion when the product is called_________________?
A. common ion effect
B. solubility product
C. dissociation constant
D. dissociation constant for an acid - Which of the following points are important in connection with equilibrium constant ?
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 - 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 - 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 - Unit of Kc is_______________?
A. moles2dm+6
B. moles-2dm+6
C. moles+2dm-6
D. Kc may or may not have units - At start of reaction the concentration of reactants is_______________?
A. high
B. low
C. according to Kc
D. constant - Any process of chemical decay of metals due to the action of surrounding medium is called__________________?
A. activation
B. enameling
C. corrosion
D. coating
