Catalyst used to speed up the reaction of ammonia synthesis is________________________?
(A) V2O5
(B) V2O5 and Pt
(C) Fe
(D) Pieces of Fe crystals are embedded in fused mixture of MgO Al2O3 and SiO2
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
Unit of Kc is_______________?
(A) moles2dm+6
(B) moles-2dm+6
(C) moles+2dm-6
(D) Kc may or may not have units
Conversion of reactant into product in unit time is called________________?
(A) rate of forward reaction
(B) rate of backward reaction
(C) rate constant
(D) rate co-efficient
Reaction which proceeds in both directions is called_______________?
(A) reversible
(B) irreversible
(C) spontaneous
(D) non-spontaneous
Which one of the following aqueous solutions will be basic ?
(A) NaCI
(B) Na2SO4
(C) Na2CO3
(D) FeCl3
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
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
Conjugated base of a weak acid is_________________?
(A) weak
(B) strong
(C) moderately weak
(D) unstable