Electrolytes Quiz 1

Question 1

Strong electrolytes and weak electrolytes can be differentiated on the basis of:

Accepted Answer

All of the above

Answer

Degree of Ionisation

Answer

Electrical conductivity

Answer

Concentration of the electrolyte

Question 2

Shiva passed a steady current of $$4$$ amperes for $$1800$$ seconds through an aqueous solution of copper sulphate. The mass of copper deposited on the cathode calculated by him would be:

Accepted Answer

2.37g

Answer

2.17g

Answer

2.57g

Answer

2.07g

Question 3

Molar conductance of $$0.1M$$ acetic acid solution was found to be $$3.907oh{{m}^{-1}}c{{m}^{2}}/mol$$ at a particular temperature. What is the degree of ionization of acetic acid at this concentration? Given that $${{\Lambda }_{m}}$$ of cation and anion of acetic acid are $$349.8oh{{m}^{-1}}c{{m}^{2}}$$ and $$40.9oh{{m}^{-1}}c{{m}^{2}}$$ respectively.

Accepted Answer

0.01

Answer

0.1

Answer

0.001

Answer

None of these

Question 4

The same quantity of electricity is passed through two coulometers namely, copper and silver coulometers connected in series. What mass of silver will be deposited on the silver cathode if $$1.25g$$ of copper is deposited on the copper cathode?

Accepted Answer

4.24g

Answer

5.24g

Answer

4.34g

Answer

5.34g

Question 5

A conductance cell containing $$0.02M$$ $$KCl$$ solution at $${{25}^{0}}C$$ showed a resistance of $$165$$ ohms. The specific conductance of $$KCl$$ solution is $$2.76	imes {{10}^{-3}}oh{{m}^{-1}}c{{m}^{-1}}$$ . The same cell containing $$NaCl$$ solution has shown $$385$$ ohms. The molar conductance of $$NaCl$$ solution is:

Accepted Answer

$$118oh{{m}^{-1}}c{{m}^{2}}mo{{l}^{-1}}$$

Answer

$$117oh{{m}^{-1}}c{{m}^{2}}mo{{l}^{-1}}$$

Answer

$$115oh{{m}^{-1}}c{{m}^{2}}mo{{l}^{-1}}$$

Answer

$$119oh{{m}^{-1}}c{{m}^{2}}mo{{l}^{-1}}$$