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10 doubts found
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NEETChemistryeasy
What does “Enthalpy (H)” actually mean in Chemical Thermodynamics, and why does it matter for NEET?
the heat content at constant pressure; ΔH is negative for exothermic and positive for endothermic reactions.
Chemical ThermodynamicsRead →
NEETChemistrymedium
I keep getting “Enthalpy (H)” questions wrong in Chemical Thermodynamics. What's the trap?
getting the sign of ΔH the wrong way round.
Chemical ThermodynamicsRead →
NEETChemistryeasy
What does “Entropy (S)” actually mean in Chemical Thermodynamics, and why does it matter for NEET?
a measure of disorder or the number of ways energy can be arranged.
Chemical ThermodynamicsRead →
NEETChemistrymedium
I keep getting “Entropy (S)” questions wrong in Chemical Thermodynamics. What's the trap?
thinking entropy always increases for the system alone.
Chemical ThermodynamicsRead →
NEETChemistryeasy
What does “Gibbs free energy” actually mean in Chemical Thermodynamics, and why does it matter for NEET?
ΔG = ΔH − TΔS decides spontaneity — negative ΔG means the process is spontaneous.
Chemical ThermodynamicsRead →
NEETChemistrymedium
I keep getting “Gibbs free energy” questions wrong in Chemical Thermodynamics. What's the trap?
judging spontaneity from ΔH alone.
Chemical ThermodynamicsRead →
NEETChemistryeasy
What does “Hess's law” actually mean in Chemical Thermodynamics, and why does it matter for NEET?
the total enthalpy change is the same no matter the route taken.
Chemical ThermodynamicsRead →
NEETChemistrymedium
I keep getting “Hess's law” questions wrong in Chemical Thermodynamics. What's the trap?
thinking ΔH depends on the reaction path.
Chemical ThermodynamicsRead →
NEETChemistryeasy
What is the difference between enthalpy and entropy?
Enthalpy is about heat content/energy; entropy is about disorder — spontaneity balances the two through ΔG.
Chemical ThermodynamicsRead →
NEETChemistryeasy
What is the difference between exothermic reaction and endothermic reaction?
Exothermic releases heat (ΔH<0, surroundings warm); endothermic absorbs heat (ΔH>0, surroundings cool).
Chemical ThermodynamicsRead →