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Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution Short Tricks for JEE

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Short tricks for Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution work only with strong fundamentals. Apply the tips below in timed sets and review every explanation.

Use these Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution shortcuts to save time in JEE Chemistry papers — then validate speed with 22+ MCQs on Goodmarks.

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    In Physical Chemistry numericals, write the balanced relation first, then substitute values with units.

Syllabus context

Part of Chemical Thermodynamics in JEE Main Chemistry.

Free sample questions

Attempt 8 free MCQs for Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution. Unlock 14+ more with Pro.

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Q1ChemistryUnit 4: Chemical Thermodynamics
Which is a common standard for calibrating a bomb calorimeter in teaching laboratories?
Q2ChemistryUnit 4: Chemical Thermodynamics
Cgraphite+O2(g)→CO2(g);ΔH=\boldsymbol{C}_{\boldsymbol{g} \text {raphite}}+\boldsymbol{O}_{\mathbf{2}(\boldsymbol{g})} \rightarrow \boldsymbol{C} \boldsymbol{O}_{2(\boldsymbol{g})} ; \boldsymbol{\Delta} \boldsymbol{H}= −393.5kJ,ΔH-393.5 k J, \Delta H of the reaction cannot be:
Q3ChemistryUnit 4: Chemical Thermodynamics
If enthalpies of formation for C2H4(g)\boldsymbol{C}_{2} \boldsymbol{H}_{4}(\boldsymbol{g}) CO2(g)C O_{2}(g) and H2O(l)H_{2} O(l) at 25∘C25^{\circ} \mathrm{C} and 1 atm pressure be 52,-394 and -286 kJk J mol−1^{-1} respectively, then the enthalpy of combustion of C2H4(g)C_{2} H_{4}(g) will be:
Q4ChemistryUnit 4: Chemical Thermodynamics
When a solid is converted into a gas, directly by heating then this process is known as:
Q5ChemistryUnit 4: Chemical Thermodynamics
The compound with negative value of heat of formation is called:
Q6ChemistryUnit 4: Chemical Thermodynamics
Which among the following has the highest calorific value?
Q7ChemistryUnit 4: Chemical Thermodynamics
When fuel is added to the exhaust (burnt) gases in a jet engine combustion takes place. Some facts are mentioned here about this combustion. Pick the false one?
Q8ChemistryUnit 4: Chemical Thermodynamics
Which of the following equations corresponds to the definition of enthalpy of formation at 298K?298 K ?

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