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
Chemistry MCQs
Unit of Kc is_______________?
A. moles2dm+6
B. moles-2dm+6
C. moles+2dm-6
D. Kc may or may not have units
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
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
By the addition of base in waterpH will be_______________?
A. more than 7
B. less than 7
C. equal to 7
D. no effect
Negative log of mular concentration of H+ ions is called___________________?
A. pH
B. pOH
C. pKa
D. pKw
Any substance which accepts H+ is base favours the concept___________________?
A. Lowrys
B. Lewis
C. Arrhenius
D. None of these
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
Addition of CH3COOH and CH3COONa gives in water_______________?
A. Standard solution
B. buffer solution
C. acidic buffer solution
D. both B & C
Solubility of any salt can be determined from_______________?
A. Ka
B. Kb
C. Kc
D. Ksp
