Download App

Solutions — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistrySolutions3 Marks
Question
Using Raoult’s law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions.
$NaCl(s)$ and $H_2O(l)$
✓

Answer

For a solution containing non-volatile solute i.e. $NaCl(s)$ and $H_2O(l),$ the Raoult’s law is applicable only to vaporisable component (1) i.e. $H_2O(l)$ and total vapour pressure is written as,
$\text{p}=\text{p}_1=\text{x}_1\text{p}^0_1$
Where ${p_1}^o$ reresents the vapour pressure of pure $H_2O(l)$

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 "3 Marks Question" from Solutions→Solutions — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

How can diethyl ether be prepared from
i. ethyl iodide
ii. ethyl alcohol?
Why is the boiling point of an ether lower than that of the isomeric alcohols.
→
Write the mechanism of acid dehydration of ethanol to yield ethane.
→
How are the following conversions carried out?
Propanol to propan-2-ol
→
Silver crystallises with face-centred cubic unit cells. Each side of the unit cell has a length of 409 pm. What is the radius of an atom of silver? (Assume that each face atom is touching the four corner atoms.)
→
What are enantiomers? Draw the structures of the possible enantiomers of 3-methylpent-1-ene.
→
$^{238}_{92}\text{U}$ Change to $^{206}_{92}\text{Pb}$ by successive radioactive decay.
A sample of urenium ore was anlaysed and found to contain $1.0\ g$ of $^{238}\text{U}$ and $0.1\ g$ of $^{206}\text{Pb}$ had accumulated due to decay of $^{238}\text{U}$, find out the age of ore. (Half- life of $^{238}\text{U}$$= 4.5\times10^9$ years).
→
Write the names and structures of the monomers of the following polymers :
  1. Bakelite
  2. PVC
  3. Buna-S
→
Answer the following question:
Give chemical tests to distinguish between:
  1. Acetaldehyde and benzaldehyde.
  2. Propanone and propanol.
→
Draw the structures of the monomers of the following polymers:
  1. Polythene.
  2. PVC.
  3. Teflon.
→
Write all the possible isomers of $[Co(NH_3)_5(SCN)]Cl$.
→