Which of the four colligative properties is most often used for m… - Vidyadip

Question

Which of the four colligative properties is most often used for molecular mass determination? Why?

✓

Answer

Since osmotic pressure has large values, it can be measured more precisely.
The osmotic pressure can be measured at a suitable constant temperature.
The molecular masses can be measured more accurately.
Therefore, it is more useful to determine molecular masses of expensive substances by osmotic pressure.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following in detail." from Solutions→Solutions — all question types→Chemistry STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

Enthalpy of sublimation of graphite is $716 kJ mol ^{-1}$.

Bond enthalpies	$H - H$	$C - H$
$\Delta H ^0 kJ mol ^{-1}$	$436.4$	414

Calculate standard enthalpy of formation of $CH _4$.

Write reaction showing conversion of p- bromoisopropyl benzene into p-Isopropyl benzoic acid (3 steps).

Third layer of spheres is added to second layer so as to form hcp or ccp structure. What is the difference between the addition of third layer to form these hexagonal close-packed structures?

Explain the position of actinoids in the periodic table. What is the action of sulphur on lanthanoids? Calculate the magnetic moment of divalent ion in aqueous solution if its atomic number is $24.$

Explain close packing in three dimensions.

Answer the following
Define the following term: Nanotechnology

Define Solubility product.

The standard entropies of $H _{2( g }, O _{2( g )}$ and $H _2 O _{( g )}$ in $JK ^{-1} mol ^{-1}$ are 130,205 and 189 respectively. The heat of formation of $H _2 O _{( g )}$ is $-242 kJ mol ^{-1}$. Calculate $\Delta S$ for formation of $H _2 O _{( g )}$. for the surroundings and the universe at $298 K$. Mention whether the reaction is spontaneous or non-spontaneous.

The vapour pressure of water at 20 °C is 17 mm Hg. What is the vapour pressure of solution containing 2.8 g urea in 50 g of water? (16.17 mm Hg)

Calculate the standard enthalpy of the reaction.
$2 Fe _{( s )}+\frac{3}{2} O _{2( g )} \longrightarrow Fe _2 O _{3( s )}$
Given :

1.	$2 Al _{( s )}+ Fe _2 O _{3( s )} \longrightarrow 2 Fe _{( s )}+ Al _2 O _{3( s )}$	$\Delta_{ r } H ^{\circ}=-847.6 \ kJ$
2.	$2 Al _{( s )}+\frac{3}{2} O _{2( g )} \longrightarrow Al _2 O _{3( s )}$	$\Delta_{ r } H ^{\circ}=-1670 kJ$