Precipitates Quiz 1

Question 1

Find the opposite method to precipitation among the following given options?

Accepted Answer

Melting

Answer

Distillation

Answer

Solution crystallization

Answer

Crystallization

Question 2

Which type of solutes shows the property of precipitation?

Accepted Answer

Sparingly soluble solutes

Answer

Insoluble solutes

Answer

Highly soluble solutes

Answer

None of the above

Question 3

Find the precipitate which is going to form in the following chemical reaction? $$Ba{{(N{{O}_{3}})}_{2}}+N{{a}_{2}}S{{O}_{4}} 	o Precipitate$$

Accepted Answer

$$BaS{{O}_{4}}$$

Answer

$$NaN{{O}_{3}}$$

Answer

$$Na{{(N{{O}_{3}})}_{2}}$$

Answer

$$BaN{{a}_{2}}$$

Question 4

Observe the given data and find which chemical shows highest solubility at $${{25}^{\circ}}C$$ among the given options? Solubility products $${{K}_{sp}}$$ of different chemicals is as follows. $$A{{g}_{2}}Cr{{O}_{4}}:9	imes {{10}^{-12}}$$, $$ BaCr{{O}_{4}}:2	imes {{10}^{-10}} $$, $$ PbCr{{O}_{4}}:1.8	imes {{10}^{-14}}$$

Accepted Answer

$$A{{g}_{2}}Cr{{O}_{4}}$$

Answer

Impossible to find

Answer

$$BaCr{{O}_{4}}$$

Answer

$$PbCr{{O}_{4}}$$

Question 5

The solubility of cupric hydroxide is $$1.6	imes {{10}^{-19}}$$ . Find the pH of the solution having the concentration of copper is 0.0016M?

Accepted Answer

6.0

Answer

9.0

Answer

7.0

Answer

None of the above