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1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Ionisation constant of CH3COOH is 1.7 $$ \times $$ 10$$-$$5 and concentration of H+ ions is 3.4 $$ \times $$ 10$$-$$4. Then find out initial concentration of CH3COOH molecules.
A
3.4 $$ \times $$ 10$$-$$4
B
3.4 $$ \times $$ 10$$-$$3
C
6.8 $$ \times $$ 10$$-$$4
D
6.8 $$ \times $$ 10$$-$$3
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Correct relation between dissociation constants of a dibasic acid is
A
Ka1 = Ka2
B
Ka1 > Ka2
C
Ka1 < Ka2
D
Ka1 = $${1 \over {{K_{{a_2}}}}}$$
3
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Which statement is wrong about pH and H+?
A
pH of neutral water is not zero.
B
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.
4
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Conjugate acid of NH2$$-$$ is
A
NH4OH
B
NH4+
C
NH2$$-$$
D
NH3
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