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Standard X

Chemistry

pH of Salts

50 g of commo...

Question

50 g of common salt is added to 100 g of water at 20 ℃. Observe the solution given below and fill in the blanks. (Solubility of salt in 100 g water is 36 g at 20 ℃)

a) The salt solution is _______.

s R

b) The undissolved salt can be dissolved by _ the temperature.

C E G

c) The undissolved salt can be separated by _______.

L R

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Solution

a) The salt solution is saturated.

b) The undissolved salt can be dissolved by increasing the temperature.

c) The undissolved salt can be separated by filtration.

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Similar questions

Name :

(a) a chloride which is insoluble in cold water but dissolves in hot water,

(b) a chloride which is insoluble,

(d) a basic salt,

(e) an acidic salt,

(f) a mixed salt,

(g) a complex salt,

(h) a double salt,

(i) a salt whose solubility increases with temperature,

(j) a salt whose solubility decreases with temperature.

To make a saturated solution, $136 g$ of a salt is dissolved in $500 g$ of water at 293 K. Find its solubility at this temperature.

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(b) Salt and water can be recovered from an aqueous salt solution by the process of evaporation.

Q. Pragya tested the solubility of three different substances at different temperatures and collected the data as given below(results are given in the following table, as grams of substance dissolved in

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grams of water to form a saturated solution).

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grams of water at

313

(b)

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(d)

What is the effect of change of temperature on the solubility of a salt?

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$\begin{matrix} Temperature (degree celsius) & 20 & 30 & 40 & 50 & 60 Solubility (g per 100 ml) & 34.2 & 37.2 & 40.1 & 42.6 & 45.8 \end{matrix}$

Deepti takes 50 ml of water and adds 20 g of salt to it. The temperature of the solution is $20^{\circ}$ C. Choose the correct statement.

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a) The salt solution is saturated. b) The undissolved salt can be dissolved by increasing the temperature. c) The undissolved salt can be separated by filtration.

a) The salt solution is saturated.

b) The undissolved salt can be dissolved by increasing the temperature.

c) The undissolved salt can be separated by filtration.