Explain the following giving examples.
$(a)$ Colloid
$(b)$ Suspension
$(a)$ Colloid
$(b)$ Suspension
(N/A) Colloid: $A$ heterogeneous mixture in which the solute particle size is too small to be seen with the naked eye,but is large enough to scatter light is known as a colloid. There are two phases in a colloidal solution:
$1.$ Dispersed phase: The solute-like particles are said to be the dispersed phase.
$2.$ Dispersion medium: The medium in which the solute particles are spread is called the dispersion medium.
Example: Milk,clouds,etc.,are examples of colloids.
$(b)$ Suspension: $A$ suspension is a heterogeneous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium. Particles of a suspension are visible to the naked eye.
Example: $A$ mixture of sand and water,muddy water,etc.
$1.$ Dispersed phase: The solute-like particles are said to be the dispersed phase.
$2.$ Dispersion medium: The medium in which the solute particles are spread is called the dispersion medium.
Example: Milk,clouds,etc.,are examples of colloids.
$(b)$ Suspension: $A$ suspension is a heterogeneous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium. Particles of a suspension are visible to the naked eye.
Example: $A$ mixture of sand and water,muddy water,etc.
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Pragya tested the solubility of four 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 $100 \,g$ of water to form a saturated solution).
< strong>Substance Dissolved < strong>$283 \,K$ < strong>$293 \,K$ < strong>$313 \,K$ < strong>$333 \,K$ < strong>$353 \,K$ Potassium nitrate $21$ $32$ $62$ $106$ $167$ Sodium chloride $36$ $36$ $36$ $37$ $37$ Potassium chloride $35$ $35$ $40$ $46$ $54$ Ammonium chloride $24$ $37$ $41$ $55$ $66$
$(a)$ Find the solubility of each salt at $293 \,K$. Which salt has the highest solubility at this temperature?
$(b)$ What is the effect of change of temperature on the solubility of a salt?
| < strong>Substance Dissolved | < strong>$283 \,K$ | < strong>$293 \,K$ | < strong>$313 \,K$ | < strong>$333 \,K$ | < strong>$353 \,K$ |
| Potassium nitrate | $21$ | $32$ | $62$ | $106$ | $167$ |
| Sodium chloride | $36$ | $36$ | $36$ | $37$ | $37$ |
| Potassium chloride | $35$ | $35$ | $40$ | $46$ | $54$ |
| Ammonium chloride | $24$ | $37$ | $41$ | $55$ | $66$ |
$(a)$ Find the solubility of each salt at $293 \,K$. Which salt has the highest solubility at this temperature?
$(b)$ What is the effect of change of temperature on the solubility of a salt?
Medium
View SolutionPragya tested the solubility of four 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 $100 \,g$ of water to form a saturated solution).
Substance Dissolved $283 \,K$ $293 \,K$ $313 \,K$ $333 \,K$ $353 \,K$ Potassium nitrate $21$ $32$ $62$ $106$ $167$ Sodium chloride $36$ $36$ $36$ $37$ $37$ Potassium chloride $35$ $35$ $40$ $46$ $54$ Ammonium chloride $24$ $37$ $41$ $55$ $66$
$(a)$ What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in $50 \,g$ of water at $313 \,K$?
$(b)$ Pragya makes a saturated solution of potassium chloride in water at $353 \,K$ and leaves the solution to cool at room temperature. What would she observe as the solution cools? Explain.
| Substance Dissolved | $283 \,K$ | $293 \,K$ | $313 \,K$ | $333 \,K$ | $353 \,K$ |
| Potassium nitrate | $21$ | $32$ | $62$ | $106$ | $167$ |
| Sodium chloride | $36$ | $36$ | $36$ | $37$ | $37$ |
| Potassium chloride | $35$ | $35$ | $40$ | $46$ | $54$ |
| Ammonium chloride | $24$ | $37$ | $41$ | $55$ | $66$ |
$(a)$ What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in $50 \,g$ of water at $313 \,K$?
$(b)$ Pragya makes a saturated solution of potassium chloride in water at $353 \,K$ and leaves the solution to cool at room temperature. What would she observe as the solution cools? Explain.
Medium
View SolutionWhat is meant by a pure substance?
Medium
View SolutionHow would you confirm that a colorless liquid given to you is pure water?
Easy
View SolutionIdentify the solutions among the following mixtures:
$(a)$ Soil
$(b)$ Sea water
$(c)$ Air
$(d)$ Coal
$(e)$ Soda water
$(a)$ Soil
$(b)$ Sea water
$(c)$ Air
$(d)$ Coal
$(e)$ Soda water
Easy
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