Solubility and Solutions
A quiz covering solubility concepts from basic identification of soluble/insoluble substances to advanced calculations involving solubility products (Ksp), common ion effects, and pH influence on solubility.
Questions
How many of the following are soluble in water?
salt, sugar, sand, dust
- 1
- 2
- 3
- 4
Pick one material which is completely soluble in water:
- oil
- sawdust
- mud
- alum
Select a pair of solute and solvent materials to form solution:
- Chalk powder and water
- Alcohol and water
- Milk and oil
- Glass and water
Find odd one out on the basis of the solubility of the material.
- Sugar
- Salt
- Chalk
- Wood
The EMF of the cell: Ag, AgCl in $0.1 M - KCl \parallel$ satd. $ NH _{4}NO _{3}\parallel 0.1 M - Ag NO _{3},$ Ag is 0.42 V at $ 25^{\circ}C.$ 0.1 M-KCl is 50% dissociated and $0.1 M - Ag NO _{3}$ is 40% dissociated. The solubility product of $ AgCl $ is $ (2.303 RT/F = 0.0)$
- $1.0 \times 10^{-10} $
- $ 2.0 \times 10^{-9} $
- $ 1.0 \times 10^{-9}$
- $ 2.0 \times 10^{-10} $
Maximum of 9.72 g of potassium chloride dissolves in 30 g of water at $70^{\circ}$C. The solubility of potassium chloride at $70^{\circ} C$ is:
- 3.24 g
- 32.4 g
- 0.324 g
- 33.4 g
What do you understand by the statement "the solubility of copper sulphate in water at $20^{\circ}C$ is 20.7 g" ?
- A maximum of 20.7 grams of copper sulphate can be dissolved in 100 ml water at a temperature $20^{\circ}$C.
- A maximum of 20.7 grams of copper sulphate can be dissolved in 100 g of water at $20^{\circ}$C.
- A maximum of 20.7 grams of copper sulphate can be dissolved in 79.3 g of water at $20^{\circ}$C.
- A maximum of 20.7 grams of copper sulphate can be dissolved in 79.3 ml of water at $20^{\circ}$C.
In the solvation of $NaCl$ in water, which of the following occur ?
- Hydrogen atom interacts with $Cl^-$ atom
- Oxygen atom interacts with $Na^+$ atom
- Both $A$ and $B$
- None of these
DHOKALA is a __________ type of solution.
- solid-in-solid
- solid-in-gas
- solid-in-liquid
- gas-in-solid
Select the material which is insoluble in water.
- Glucose
- Washing soda
- Alcohol
- Benzene
At ${25}^{o}C$ the solubility of ${Ag} _{2}{CO} _{3}$ (${K} _{sp}=4.3\times {10}^{-13}$) would be in what order in the following solutions?
- $0.01M$ $Ag{NO} _{3}$
- $0.04M$ ${K} _{2}{CO} _{3}$
- pure water
- in a buffer ($pH=4$)
$Ca _3(PO _4) _2$ is insoluble in water. On adding a few drops of HCl to solid $Ca _3(PO _4) _2$ in contact with water, the solid dissolves. The reason is?
- The solvent becomes more polar on adding HCl
- $Ca _3(PO _4) _2$ combines with HCl to form soluble $CaCl _2$
- $Ca(H _2PO _4) _2$ is formed, which dissolves
- $H _3PO _4$, a weak acid is formed and the solubility product of $Ca _3(PO _4) _2$ decrease
The solubility of $A _{2}X _{3}$ is $y$ $mol$ $dm^ {-3}$. Its solubility product is _____________.
- $6y^ {4}$
- $64y^ {4}$
- $36y^ {5}$
- $108y^ {5}$
What is the solubility of $Al(OH _{3}), K _{sp} = 1 \times 10^{-33}$, in a solution having $pH = 4$?
- $6 \times 10^{-3}$M
- $10^{-6}$M
- $1.5 \times 10^{-4}$M
- $2.47 \times 10^{-9}$M
Which of the following is most soluble?
- ${Bi} _{2}{S} _{3} \left({K} _{sp} = 1\times {10}^{-17}\right)$
- $MnS\left({K} _{sp} = 7\times {10}^{-16}\right)$
- $CuS\left({K} _{sp} = 8\times {10}^{-37}\right)$
- ${Ag} _{2}S\left({K} _{sp} = 6\times {10}^{-51}\right)$
The solubility of $Ag _{2}CO _{3}$ in water is $1.26 \times 10^{-4}$ mole/litre. What is solubility in 0.02 M $Na _{2}CO _{3}$ solution?
Note : Assume no hydrolysis of $CO _{3}^{2-}$ ion. (Take $\sqrt[3]{2} = 1.26$).
- $5 \times 10^{-6}$M
- $\sqrt{50} \times 10^{-6}$M
- $10^{-5}$M
- $2 \times 10^{-5}$M
$PbCl _2$ has maximum concentration of $1.0 \times 10^{-3}$ M in its saturated aq. solution at $25^0$C. Its solubility in $0.1$M NaCl solution will be :
- $4 \times 10^{-7}$M
- $4 \times 10^{-9}$M
- $2 \times 10^{-7}$M
- $2 \times 10^{-9}$M