Find the solubility of $K N O_{3}$ at $20^{\circ} C$ when the mass of the empty dish is 50 g, the mass of dish and solution is 65 g, while the mass of dish and residue is 54.3 g.

Open in App

Solution

Mass of solution = (mass of dish and solution) $-$ (mass of dish ) $= 65 g - 50 g = 15 g$
Mass of solute = (mass of dish and residue ) $-$ (mass of dish) = $54.3 g - 50 g = 4.3 g$
Mass of solvent = mass of solution - mass of solute $= 15 - 4.3 = 10.7 g$
Solubility is amount of solute present in $100 g$ of solvent.
Hence, $4.3 g$ of solute is dissolved in $110.7 g$ solvent.
$1 g$ solvent will dissolve $4.3 / 10.7 g$ solute.
$100 g$ of solvent will dissolve $(4.3 \times 100) / 10.7 = 40.17 g$ of solute.

Suggest Corrections

Similar questions

(a) Find the solubility of $K N O_{3} a t 20^{\circ} C$ when the mass of the empty dish is 50 g, the mass of dish and solution is 65 g, while the mass of dish and residue is 54.3 g.

(b) What weight of sodium nitrate will separate when a saturated solution containing 50 gram of water is cooled from $50^{\circ} C t o 30^{\circ} C$ ? The solubility of $N a N O_{3} a t 50^{\circ} a n d 30^{\circ}$ is 114 g and 86 g respectively.

Q. A china dish weighs 25 g when empty. When a saturated solution of potassium chloride is poured into it at 40

^{o}

C, the weight of the dish is 63 g. When the solution is totally evaporated, the chine dish along with the crystals weighs 40 g. Find the solubility of potassium chloride at 40

^{0}

An empty evaporating dish weighs 20.0g. After adding saturated solution of $N a N O_{3}$ , the dish weighs 66.0g. When evaporated to dryness the dish with crystals weighs 41.5g. Find the solubility of $N a N O_{3}$ at $20^{0} C$ .

Q. The weight of an empty china dish is 39 g and when a saturated solution of potassium nitrate is poured into, its weight is 108 g at

50^{\circ} C

. After evaporating the solution to dryness, if the weight of the dish along with the crystals is 72 g then the solubility of potassium nitrate at

50^{\circ} C

is .....................

Q. A shallow glass dish is

4.00 c m

wide at the bottom, as shown in figure. When an observer's eye is positioned as shown, the observer sees the edge of the bottom of the empty dish. When this dish is filled with water, the observer sees the centre of the bottom of the dish. Find the height of the dish.

(μ_{w} = 4 / 3)

Join BYJU'S Learning Program

Find the solubility of KNO3 at 20∘C when the mass of the empty dish is 50 g, the mass of dish and solution is 65 g, while the mass of dish and residue is 54.3 g.

Find the solubility of $K N O_{3}$ at $20^{\circ} C$ when the mass of the empty dish is 50 g, the mass of dish and solution is 65 g, while the mass of dish and residue is 54.3 g.