not in jee syllabus but

[upper compass]

If this is true, then how does born lande equation work? moreover in jd lee they have directly given lattice energy has =kq1q2/r somehow

[azure grotto]

<@&1227988359910260737>

Note for OP

+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.

[autumn cloak]

Kqq/r is potential energy i.e energy need to be spent to bring charges from infinity to a finite distance

[upper compass]

rehnde bro

[patent wraith]

I'm answering this considering you meant 'born haber cycle'.
First of all there's a difference between lattice energy and lattice enthalpy.
Could be wrong but imo they're both calculated in order to estimate the enthalpy but as the former one is calculated on assumption that the charges are concentrated at a point hence the term lattice energy.
Whereas the latter one is calculated by Hess Law. They could vary by a fair margin but ig there are cases where they don't or barely do.

So, Lattice enthalpy is estimated by Hess Law and Lattice energy by applying physics considering it to be a point charge system.

lemme search it up on libre texts

Here you go

[patent wraith]

Nope! Potential energy is the energy stored due to it's relative position which is the result of work done on that body against conservative force. Being pedantic but 'spent' wouldn't be the right word to use in either of the cases as potential energy is the 'stored energy' by virtue of the bodies relative postion or other stuff.

[autumn cloak]

Mai jitna energy spent karunga utna hi toh story hoga na

[patent wraith]

didn't know about born laden eqn searched it up but my answer's still the same i.e enthalpy and energy are different

[autumn cloak]

Potential energy ka deprivation bhi toh work done se aata

Derivation*

[patent wraith]

jitna work karoge utna store hoga

[autumn cloak]

Ja vahi
Work is energy spend in displacing body right?

[patent wraith]

Potential energy exits due to the work done but the vice versa isn't true is it?

[patent wraith]

what energy spend are you talking about

[autumn cloak]

Hmm yeah right

[patent wraith]

then how can you say that potential energy is the energy spent in bringing that body to some x position?

[autumn cloak]

Example
If I lift a block from ground to height h
Then work done is mgh right?
And potential energy is.. Also mgh right?

[autumn cloak]

Because it itself says potential energy is work done in bringing charge from infinity to a point WITHOUT changing it's kinetic energy

[patent wraith]

yes but your premise is still not corrrect

[patent wraith]

the values might be same but what i'm saying is that 'spent' isn't the right word for it

[autumn cloak]

Ho sakta hai
Thoda time ho gaya electric kiye

[autumn cloak]

Oh thaaaattttttt
Real real

Energy conservation...

[patent wraith]

khud dekho you yourself said without changing it's kinetic energy so energy expenditure jo tum state kar rahe the wo kaha hua?

[autumn cloak]

Potential energy store karne mein

I get it... I used the word spent but didn't mean it but yeah
My mistake, I agree

[patent wraith]

🤝

[autumn cloak]

🫂

[autumn cloak]

Konsa chaper padh re?

[patent wraith]

ye sab dms m pooch lo afaik this thread is for doubts

[lilac spade]

https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Crystal_Lattices/Thermodynamics_of_Lattices/The_Born-Lande'_equation

[upper compass]

no i dont mean born haber cycle

born lande equation is something else entirely

[lilac spade]

Yea linked above

[upper compass]

yea i asked my sir, he said its kind of an approximation

[lilac spade]

Yep.

[patent wraith]

did reply considering born laden

[lilac spade]

let us wrap this one up, shall we?

[upper compass]

yea my bad

+solved @lilac spade @patent wraith