Explain why evaporation leads to cooling of the liquid. - Vidyadip

Question

Explain why evaporation leads to cooling of the liquid.

✓

Answer

This is due to the reason that the molecules which undergo evaporation are high energy molecules and therefore, the kinetic energy of the remaining molecules becomes less. Since, the remaining molecules have lower average kinetic energy, their temperature becomes low.

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 "2 Marks Questions" from States of Matter→States of Matter — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Will AgCl be more soluble in aqueous solution or NaCl solution and why?

Define inversion temperature of a gas.

Arrange $C , N , O$ and F in increasing order of second ionization enthalpy, with reason.

What is state of hybridization of the carbon atoms in $\text{CH}_3-\text{HC}=\text{CH}_2?$

Consider the elements:
Cs, Ne, I and F
Identify the element that exhibits only negative oxidation state.

The threshold frequency v , for a metal is $7.0 \times 10^{14} \mathrm{~s}^{-1}$. Calculate the kinetic energy of an electron emitted when radiation of $\mathrm{v}=1.0 \times 10^{15} \mathrm{~s}^{-1}$ hits the metal.

Assuming complete dissociation, calculate the pH of the following solutions:0.002 M KOH

Calculate the bond enthalpy of $Cl - Cl$ bond from the following data:
$CH_4(g)+Cl_2(g) \rightarrow CH_3 Cl(l)+HCl(l) ;\left[\Delta H=-100.3 kJ mol^{-1}\right]$
Given, bond enthalpies of $C - H , C - Cl$ and $H - Cl$ bonds are 413,326 and $431 kJ mol ^{-1}$ respectively.

The first $\left(\mathrm{IE}_1\right)$ and second $\left(\mathrm{IE}_2\right)$ ionisation energies $(\mathrm{kJ} / \mathrm{mol})$ of a new element designated by Roman numerals are shown below:

	$\text{IE}_1$	$\text{IE}_2$
I	2372	5251
II	520	7300
III	900	1760
IV	1680	3380

Which of these elements is likely to be (a) a reactive metal, (b) a reactive non metal, (c) a noble gas, and (d) a metal that forms a binary halide of the formula, $\mathrm{AX}_2$?

Write the properties of $d$-block element.