Arrhenius Acid

Q.

Calculate the hydrolysis constant $\left(K_h\right)$ of the salt containing $N{O}_2$. Given the

$K_a$ for $HN{O}_2$ = $4.5\times {10}^{-10}$

1. $2.22\times {10}^{-5}$

2. $4.33\times {10}^4$

3. $2.02\times {10}^5$

4. $3.03\times {10}^{-5}$

Q. The van't Hoff factor $\left(i\right)$ for a dilute aqueous solution of the strong electrolyte barium hydroxide is:

[NEET 2016]

Q. Solubility product of silver bromide is $5.0\times {10}^{-13}$. How much of potassium bromide $\left(120{\text{g mol}}^{-1}\right)$ has to be added to $1\text{L}$ of $0.05M$ solution of silver nitrate to start the precipitation of $AgBr$ ?

1. $1.2\times {10}^{-10}\text{g}$
2. $5.0\times {10}^{-8}\text{g}$
3. $1.2\times {10}^{-9}\text{g}$
4. $6.0\times {10}^{-5}\text{g}$

Q.

Explain the acidity of a base.

Q.

Nicotinic acid (Ka = 1.4 x ${10}^{-5}$) is represented by the formula HNic. For a solution which contains 0.10 mol of nicotinic acid per 2.0 litre of solution, the percent dissociation is:

1. 4.2%

2. 12.77%

3. 1.66%

4. 3.33%

Q. Sort the acids according to their strengths in the decreasing order.

1. $HCl{O}_4$
2. $HCl{O}_3$
3. $HCl{O}_2$
4. $HClO$

Q.

The correct statements regarding the acids are
A) $N{H}_3$ can act as both bronsted base as well as Lewis base
B) Dry hydrogen chloride is not Arrhenius acid

C) According to Davy, acid must contain oxygen as necessary element

1. A and B

2. A and C

3. B and C

4. A, B and C

Q.

Fill in the blanks by using the correct word/ term given in the brackets.

The properties of ___ are due to the hydrogen ions it produces in aqueous solution.

Q. Calculate the equivalent conductivity of $1\text{M}{H}_{2}S{O}_4$ solution if its specific conductivity is $26\times {10}^{-2}{\text{ohm}}^{-1}{\text{cm}}^{-1}$.

$(\text{Atomic weight of sulphur}=32\text{g/mol})$