How to Draw Born Haber Cycle of Ionic Compounds - Energetics

[@janelleong1485]

omg i finally understand born haber cycle!! thankyou so much!!

[@ChemistryGuru]

Hi Janelle! Glad you found the video useful! :)

[@asiathompson2559]

Couldn’t wrap this around my head until just now, thankyou so much!

[@avaverreault1793]

Thank you so much! I finally understand the Born Haber cycle after searching endlessly on youtube haha

[@hilaryjayakody2404]

These videos help a lot specially in this period of quarantine ...thank you so much ...big thumbs up all the way from Sri lanka..

[@ChemistryGuru]

Hi Hilary thank you so much! Stay safe and healthy during this quarantine! :)

[@douglasfurtek7637]

You deserve a lot more viewers and subscribers. Your explanations are so clear and concise. Thanks

[@ChemistryGuru]

Thank you for your kind compliments! Really appreciate it :)

[@douglasfurtek7637]

@@ChemistryGuru You are welcome. You deserve high praise.

[@hannahocan]

Thank you so much!! This video made so much more sense than the teacher and the textbook did!

[@innocentabae1118]

It's a very clear explanation and illustration as well. Good work.

[@alphamenson3784]

keep doin this good work man, shout out to yo bro...all the way up from East Africa in Tanzanian

[@ChemistryGuru]

Thanks Kendrick for the encouragement! Yup will keep working on this! 😁

[@ssemakulagrace4900]

You're good sir, precise yet elaborate Thank you so much 🤝

[@Jjirfa]

Thank you so much for this. You're a great teacher.

[@zongbinhong455]

splendid, concise great demonstration. Thank you!

[@PossibilityGanyiwa]

U are the guru 🙏

[@frankkazem5359]

This awesome muri chiba chibe chibabest when it comes to chemistry

[@violetkapasa-qp6kz]

Thank this was very helpful ❤😊😊😊

[@Lanadelreyloverr]

You life saviour thank you so much

[@rakibspathshala2164]

Thank you At last clear the topics

[@asadavsten1481]

hello sir. i want to ask. what about Ca3N2? it is the draw was same? so Ca3 was solid and there is 3 Ca. are we going to separate the Ca? so Ca3 going to 3Ca (atomic)? if like that, i think we need to build one more line. what i mean is like you did Cl2, you make it to 2Cl (two atoms). and my case here is Ca3, i want to make them three atoms Ca. what you say sir? thank you very much before for you're attention

[@haseebfareed9921]

Hats off for this Sir

[@sravanichappalle7089]

Thank you for this video! Helped me a lot ^^

[@marissarivera4502]

Thank you so much, this was so helpful!

[@roriefriz9068]

Could we also say that the Ca(s) is being dissociated into Ca (g), like so its not atomisation energy being used but dissociation energy?

[@ChemistryGuru]

dissociation energy is involving breaking of 1 mole of covalent bonds, so for metals there is no dissociation energy since the attractions holding calcium atoms together are metallic bonds and not covalent bonds. atomisation is to convert elements to 1 mole of gaseous atoms, so the bonds broken depends on the attraction in the elements, eg for metals will be metallic bonds, simple and giant molecules will be covalent bonds.

[@roriefriz9068]

@@ChemistryGuru Thank you so much!

[@roriefriz9068]

@@ChemistryGuru Hello, I have one other question. Could we consider sublimation energy and atomisation energy to be the same thing?

[@ChemistryGuru]

@@roriefriz9068 sublimation is a physical process from solid to gas so it's different from atomisation. In general if the names of the processes are different then they must mean different things, if not there is no need to have 2 processes with different names but are the exact same process.

[@RomarioBryan-y1i]

i thought that the 2nd electron affinity would be above the first AE at the extreme top du do it being endothermic.

[@madchaddd]

Thank you Cher!!🥲

[@hadiap6507]

Why do we put 2 in front of the Chlorine?

[@tadiwanashemandaza8021]

Thank u so much sir...was so lost b4

[@duckman8261]

true lifesaver!

[@hehez8338]

Thank you very much for this.

[@roriefriz9068]

Whats the difference between dissociation energy and atomisation energy?

[@ChemistryGuru]

bond dissociation energy is energy required to break 1 mole of covalent bond. atomisation energy is energy required to convert elements to 1 mole of gaseous atoms. They are different processes.

[@roriefriz9068]

@@ChemistryGuru Could we say that Cl2(g) is using dissociation energy to be broken up into isolated atoms, instead of atomisation energy? In the above you said it was (ΔH at of Cl*2), wondering if we could say its the same as (ΔHs)? Thanks again:)) I really love your channel, its helping me so much!!!

[@ChemistryGuru]

@@roriefriz9068 yes in the case of Cl2(g) = 2Cl(g), we can describe this as either 2 x atomisation of Cl(g) or Bond dissociation energy of Cl-Cl. Both describe the same process.

[@derelict3015]

Can we use an energy cycle diagram to represent the born haber cycle?

[@ChemistryGuru]

by right both energy cycle and energy level diagram can represent Born Haber cycle (or any question involving Hess' Law), but for A Level syllabus almost all schools are using energy level diagram in their marking scheme. So it is recommended to stick with energy level diagram for Born Haber Cycle.

[@daiyankhan8082]

That was amazing

[@beanbean9019]

very helpful! :D

[@sheshanihemanthika1035]

Thank you so much, Sir!

[@rachellau8345]

Hello! May I ask if the sequence to draw any born-haber cycle is fixed?

[@ChemistryGuru]

Hi Rachel actually the sequence need not be fixed. But since Born Haber cycle is a fixed cycle with basically the same processes so it's easier to draw it in a standardised way. Much easier to remember in this way

[@suhshbekma]

great ,nice video

[@ChemistryGuru]

thanks for the compliment!

[@manashpratimxi-a2394]

Why didn't you use the enthalpy of sublimation to change the state of calcium from solid to gaseous?

[@ChemistryGuru]

the process of Ca(s) to Ca(g) is considered at atomisation instead of sublimation

[@rajpurameerut8676]

Thanks It helps a lot.

[@ChemistryGuru]

Hi Rajpura thanks! Glad the video was useful 😄

[@archismansaha9089]

Thank you so much sir

[@drayeni9436]

Why is it always exothermic? (Ionic reaction)

[@vijayjoshi5492]

Because the bond made are greater than the bonds broken within the chemical reaction, therefore, due to energy being released when bonds are formed, it is a negative ( exothermic) enthalpy change. It is a much stronger bond in ionic NaCl than it is in gaseous Na^+ + Cl^-. Hope this helps!!

[@rajpurameerut8676]

thank you

[@EdwinKiptoo-uq8et]

Wow. But I need a tution

[@raphaelkinyabwiru2500]

Thanka

[@faithelias2798]

God loves you all

[@adityameena865]

What is endodermic and exodermic😂😂

[@ChemistryGuru]

endothermic process absorbs heat from the surrounding so the temperature of surrounding will decrease. exothermic process releases heat to the surrounding so temperature of the surrounding will increase.