Download App

Thermodynamics — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryThermodynamics2 Marks
Question
What is bond energy? Why is it called enthalpy of atomisation?
✓

Answer

Bond energy is the amount of energy released when bonds are formed between isolated atoms in gaseous state to form one mole of gaseous molecule. It is called enthalpy of atomisation because it may also be defined as the amount of energy required to dissociate bonds present between the atoms of 1 mole of a gaseous molecule into constituting atoms.

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 Thermodynamics→Thermodynamics — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Classify the organic compounds.
→
Explain stock notation with example.
→
Complete the following reactions :
(i) $C _2 H _6+$ Nitric acid $\longrightarrow X$
(ii) $CH _3 Cl \xrightarrow[\text { ether }]{ Mg } X \xrightarrow{ H _2 O } Y \xrightarrow[\text { One mole }]{ Br _2}$$Z \xrightarrow{ Na + ether }$
→
At 0°C, ice and water are in equilibrium and $\Delta\text{H}=6.06\text{kJ mol}^{-1}$ for the process, H2O(s) → H2O(l)
What will be $\Delta\text{S}$ and $\Delta\text{G}$ for the conversion of ice into liquid water?
→
Calculate the entropy change in surroundings when 1.00 mol of $H _2 O ( l )$ is formed under standard conditions. $\Delta_f H ^{\ominus}=-286 kJ mol ^{-1}$.
→
Which of the following are isoelectronic species i.e., those having the same number of electrons?
$
Na^{+}, K^{+}, Mg^{2+}, Ca^{2+}, S^{2-}, Ar
$
→
Glycine is an a-amino acid. It exists in the form of Zwitter ion as +NH3CH2COO-
Write the formula of its
  1. Conjugate acid.
  2. Conjugate base.
→
What does atomic radius and ionic radius really mean to you?
→
What does the following prefixes stand for:
  1. Pico.
  2. Nano.
  3. Micro.
  4. Deci.
→
Acetic acid (ethanoic acid) and hydrochloric acid react with KOH solution. The enthalpy of neutralisation of ethanoic acid is -55.8kJ mol-1 while that of hydrochloric acid is -57.3kJ mol-1
Can you think of why are these different?
→