TRUE OR FALSE: A) Same amount (grams) of sugar, and salt in 100 gm of water will

Question

TRUE OR FALSE:

A) Same amount (grams) of sugar, and salt in 100 gm of water will result in similar effect on colligative properties.

B) When enthalpy of solution, is higher than combined value of enthalpy of solute, and enthalpy of solvent, it’s an example of endothermic reaction.

C) Cooling down an saturated solution results in supersaturated solution.

D) The phenomenon used to differentiate colloids and true solutions is called the Tyndall effect.

E) Concentration in molality does not change with change in temperature

Explanation / Answer

A) Same amount (grams) of sugar, and salt in 100 gm of water will result in similar effect on colligative properties.

False

Colligative properties depends on molality and Molality is the number of moles of solute per 1000 grams or one kilo of solvent. same mass of different compounds will have different molality.

B) When enthalpy of solution, is higher than combined value of enthalpy of solute, and enthalpy of solvent, it’s an example of endothermic reaction.

False

Its a exothermic.

C) Cooling down an saturated solution results in supersaturated solution.

False

(Heating a saturated solution results in supersaturated solution)

D) The phenomenon used to differentiate colloids and true solutions is called the Tyndall effect.

True

True Solution does not show Tyndall effect.

E) Concentration in molality does not change with change in temperature

False

On increasing temperature more and more of solutes ( which is more moles of solute) are dissolved in the fixed mass of solvent.

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