Tag: ionic equilibrium in solution

Questions Related to ionic equilibrium in solution

Which of the following is an example of weak electrolyte?

  1. $H _3BO _3$

  2. $H _2SO _4$

  3. $HNO _3$

  4. $HClO _3$


Correct Option: A
Explanation:

Boric acid is very weak acid since it dose not give $H^+$ , instead it takes $OH^-$ from $H _2O$ and become $B{ \left( OH \right)  } _{ 4 }^{ - }$ and Proton is lost from $H _2O$ not from boric acid.

The polymer containing strong intermolecular forces, i.e. hydrogen bonding, is

  1. $\text{Teflon}$

  2. $\text{Nylon-6,6}$

  3. $\text{Polystyrene}$

  4. $\text{Natural rubber}$


Correct Option: B
Explanation:

Nylon 6,6 has strong intermolecular forces like hydrogen bonding.The substantial strength of polyamides such as nylon 6,6 and Kevlar results from hydrogen bond.

Ionic solutions are good conductors of Electricity.

  1. True

  2. False


Correct Option: A
Explanation:

True Because of movement of free ions in ionic solution, they are good conductor of electricity.

Degree of ionisation does not depend on:

  1. nature of the solvent

  2. nature of the electrolyte

  3. dilution

  4. molecular mass of the electrolyte


Correct Option: D
Explanation:

Degree of ionization $(\alpha)$ depends on-

1) Concentration of solute
2) Temperature
3) Nature of electrolysis
4) Nature of solvent
5) Dilution
"$\alpha$" does not depend on molecular mass of electrolyte.

Strong electrolyte of the following is?

  1. $01M$ $HAc$

  2. $0.1M$ $HCl$

  3. $0.1M$ $KCl$

  4. $0.1M$ $NaCl$


Correct Option: B
Explanation:

B is correct

Because it dissociates completely.

The value of observed and calculate molecular weights of silver nitrate are $92.64$ and $170$ respectively. 


The degree of dissociation of silver nitrate will be :

  1. $60\%$

  2. $83.5\%$

  3. $85.3\%$

  4. $41.6\%$


Correct Option: B

 Protolysis is transfer of:

  1. Hydroxide ions

  2. Water molecules

  3. Anions

  4. Protons


Correct Option: D
Explanation:

protolysis (proton-transfer) reaction that takes place with very weak protonic acids, including water.


Protolysis $\to$ Transfer of $H^{+}$ ion and breaking of bonds by it.

Option D is correct.

In the beginning the reaction, ${\text{A}}\, \rightleftharpoons {\text{B + C,}}$ $2$ mole of $A$ are taken, out of which $0.5$ mole gets dissociated . What is the amount of dissociation of $A$ ?

  1. $0.5$

  2. $1$

  3. $0.25$

  4. $4.2$


Correct Option: A

Pure $PCl _5(g)$ was placed in a flask at $2\,atm$ and left for some time at a cretain temp. Where the following equilibrium was established $PCl _5(g) \rightleftharpoons PCl _3(g)+Cl _2(g)$
Under the given condition,pure oxygen was found to effuse $2.084$ time faster than the equilibrium mixture then $K _p$ of the above reaction is:

  1. $\dfrac{2}{3}$

  2. $\dfrac{3}{2}$

  3. $\dfrac{4}{5}$

  4. $\dfrac{5}{2}$


Correct Option: A

$C+O _{2}\rightarrow CO _{2}-Heat$

  1. Combination reaction

  2. Decomposition reaction

  3. Both $(1)$ and $(2)$

  4. none of these


Correct Option: A