Classification According to Extent of Ionisation

Q.

Ammonium chloride undergoes dissociation to produce ______ and _____ ions.

1. $N{H}_4^{+}$ and $C{l}^{-}$ respectively

2. $N{H}_3^{+}$ and $C{l}^{-}$ respectively

3. $A{l}_3^{+}$ and $C{l}^{-}$ respectively

4. $N{H}_2^{+}$ and $C{l}^{-}$ respectively

Q.

Is HCl a strong base or acid?

Q.

Question 16.
Which of the following phenomena occur, when a small amount of acid is added to water?
(i) Ionisation
(ii) Neutralisation
(iii) Dilution
(iv) Formation

Choose the correct option from the following:
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (ii) and (iv)

Q. In the following reaction acts as Bronsted-Lowry acid and acts as Bronsted-Lowrybase:
${\mathrm{NH}}_3\left(\mathrm{aq}\right)+H_{2}O\left(l\right)\to {{\mathrm{NH}}_4}^{+}\left(\mathrm{aq}\right)+{\mathrm{OH}}^{-}\left(\mathrm{aq}\right)$

1. ${\mathrm{NH}}_3$
2. $H_{2}O$
3. ${{\mathrm{NH}}_4}^{+}$
4. ${\mathrm{OH}}^{-}$

Q. An aqueous solution of release ${\text{H}}^{+}$ ions.

1. bases
2. alkalis
3. acids

Q. The hydroxide ion concentration of a solution is ${10}^{-6}$ mol/litre. The $pH$ of the solution is:

1. $6$
2. $8$
3. $-8$
4. $-6$

Q. A strong acid and a weak base reacts to form a salt. What will be the pH value of this salt in aqueous solution?

1. pH = 7
2. pH < 7
3. pH > 7
4. Variable pH, may be less or more than 7 at a particular instance

Q. Write the name and use of two strong acids and two strong bases.

Q. Which of the following will behave as a strong acid when added to water?

1. ${\text{C}}_2{\text{H}}_5\text{COOH}$
2. ${\text{H}}_2{\text{SO}}_4$
3. $\text{HCOOH}$
4. ${\text{CH}}_3\text{COOH}$

Q. You are given a 15% solution of sulphuric acid and a 15% solution of HCN (hydrocyanic acid). Which solution has the higher concentration of $H^{+}$ ions?

1. Solution of $H_{2}S{O}_4$
2. Both have equal concentration
3. Cannot be determined
4. Solution of HCN

Q. Match the following :
If $k_a$ of HCN $=5\times {10}^{-10}$, $k_a$ of HOCN $=3.2\times {10}^{-4},k_{b}ofN{H}_3=1.8\times {10}^{-5},k_{a}ofC{H}_{3}COOH=1.8\times {10}^{-5}$( all data at ${25}^{0}C)$

Q. Litmus is a indicator which is obtained from ​​.

1. fungi
2. natural
3. synthetic
4. lichens