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New answer posted
a year agoContributor-Level 10
This is a Long Answer Type Questions as classified in NCERT Exemplar
We know,
ΔStotal = ΔSsys + ΔSsurr
When a system is in thermal equilibrium with its surroundings, the surroundings' temperature is the same as the system's. Furthermore, a rise in the enthalpy of the surroundings equals a decrease in the system's enthalpy. As a result of the entropy shift in the environment,
ΔSsurr = ΔHsurr/T = -ΔHsys/T
ΔStotal = ΔSsys = (-ΔHsys/T)
Rearranging the above equation:
ΔStotal = TΔSsys - ΔHsys
For spontaneous process,
ΔStotal > 0, so
TΔSsys - ΔHsys> 0
⇒ ( - ΔHsys - TΔSsys) > 0
The above equation can be written as
- ΔG > 0
ΔG
New answer posted
a year agoContributor-Level 10
This is a Long Answer Type Questions as classified in NCERT Exemplar
A contrast is drawn in thermodynamics between extensive and intense qualities. An extensive property is one whose value is proportional to the amount or size of matter in the system. Extensive properties include mass, volume, internal energy, enthalpy, and heat capacity, to name a few.
Properties that are independent of the amount or size of matter present are known.
As though they were intensive properties Temperature, density, and pressure, for example, are intense properties. A molar property? m, is the value of an extensive property of the system for 1 mol of the sub
New answer posted
a year agoContributor-Level 10
Resonating structures of phenoxide are-
In structure I and V negative charge is on E.N. Oxygen, in other cases, it is on Less E.N Carbon hence they contribute less towards stability. And the negative charge is localized.
Resonating structures of carboxylic acid-
Both the structures have –ve charge on oxygen and electron are delocalised too hence, the carboxylic acid is more stable and acidic than phenol.
New answer posted
a year agoContributor-Level 10
1. Cyclohexanone forms cyanohydrin in good yield because the ketonic group has very less steric hindrance at both the ortho position but 2,2,6 tri methyl cyclohexanone have high steric hindrance which reduces the attack from CN nucleophile.
New answer posted
a year ago
Contributor-Level 10
1. When 1- phenyl ethane is oxidized with a strong oxidizing agent like KMnO4, it forms a benzoic acid ion.
4. When benzene is mixed with benzoyl chloride in presence of Anhyd.AlCl3 to give benzophenone.
5. When 4-oxocyclohexanecarbeldehyde is treated with tollens reagent it gets oxidized to carboxylate anion as it is aldehyde it reduces tollens reagent.
6. When 2-formyl benzoic acid is treated with NaCN it produces 2-[1-hydroxycyanom
New question posted
a year ago
New answer posted
a year agoContributor-Level 10
This is a assertion and reason answer type question as classified in NCERT Exemplar
(i) Statements A and R both are correct and R is the correct explanation of A. Since, metals like Pd and Pt adsorbs a large volume of hydrogen, hence, these are used as a storage media for it.
New question posted
a year agoNew answer posted
a year agoContributor-Level 10
This is a assertion and reason answer type question as classified in NCERT Exemplar
(i) Statements A and R both are correct and R is the correct explanation of A.
MCl2+Na2CO3→ MCO3+2NaCl
MSO4+Na2CO3→MCO3+Na2SO4
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