Adding 1 N solution of CH3COOH and 1 N solution of NaOH, pH will be seven.
C
[H+] of dilute and hot H2SO4 is more than concentrated and cold H2SO4
D
Mixing solution of CH3COOH and HCl. pH will be less than 7.
Explanation
CH3COOH is weak acid while NaOH is
strong base, so one equivalent of NaOH can
not be neutralized with one equivalent of
CH3COOH. Hence the solution of one equivalent
of each does not have pH value as 7. Its pH will be
towards basic side as NaOH is a strong base
hence conc. of OH– will be more than the conc.
of H+.
2
MCQ (Single Correct Answer)
AIPMT 2000
For any reversible reaction, if we increase concentration of the reactants, then effect on equilibrium constant
A
depends on amount of concentration
B
unchange
C
decrease
D
increase
Explanation
Equilibrium constant of a reaction is
independent of the concentration of species
involved in the reaction but dependent only
on the temperature.
3
MCQ (Single Correct Answer)
AIPMT 2000
Conjugate acid of NH2$$-$$ is
A
NH4OH
B
NH4+
C
NH2$$-$$
D
NH3
Explanation
NH3 after losing a proton (H+) gives
NH2–. So, NH3 is the conjugate acid of NH2–.
Note : Conjugate acid-base pair differ only by a proton.
Questions Asked from Equilibrium
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