How to calculate lattic energy of RbCl(s), in kJ/mol using Hess' Law

  • Thread starter Thread starter somekidben
  • Start date Start date
  • Tags Tags
    Energy Law
AI Thread Summary
To calculate the lattice energy of Rubidium chloride (RbCl) using Hess's Law, the following thermodynamic values are essential: the enthalpy of formation (ΔHformation) is -430.5 kJ/mol, the enthalpy of sublimation (ΔHsub) for Rubidium is 86 kJ/mol, the first ionization energy (ΔHion) of Rubidium is 402 kJ/mol, the bond dissociation energy (ΔHdiss) of Cl2(g) is 243 kJ/mol, and the electron affinity (ΔHea) of chlorine is +349 kJ/mol. By applying Hess's Law, the lattice energy can be derived by combining these values in a thermochemical cycle that accounts for the formation of RbCl from its gaseous ions. The discussion emphasizes the importance of these thermodynamic quantities in calculating lattice energy accurately.
somekidben
Messages
1
Reaction score
0
The enthalpy of formation (ΔHformation) of Rubidium chloride is -430.5 kJ/mol. The enthalpy of sublimation (ΔHsub) for Rubidium is 86 kJ/mol, and the first ionization energy (ΔHion) of Rubidium is 402 kJ/mol. The bond dissociation energy (ΔHdiss) of Cl2(g) is 243 kJ/mol, and the electron affinity (ΔHea) of chlorine is +349 kJ/mol.

So How do I calculate lattic energy of RbCl(s), in kJ/mol using Hess' Law
 
Chemistry news on Phys.org
Please read your private messages.

Topic locked.
 

Thread 'Humidity of a saturated NaCl solution with anticaking additive'

I want to test a humidity sensor with one or more saturated salt solutions. The table salt that I have on hand contains one of two anticaking agents, calcium silicate or sodium aluminosilicate. Will the presence of either of these additives (or iodine for that matter) significantly affect the equilibrium humidity? I searched and all the how-to-do-it guides did not address this question. One research paper I found reported that at 1.5% w/w calcium silicate increased the deliquescent point by...
View full post »

Thread 'Why does having 8 valence electrons make an element inert?'

I was introduced to the Octet Rule recently and make me wonder, why does 8 valence electrons or a full p orbital always make an element inert? What is so special with a full p orbital? Like take Calcium for an example, its outer orbital is filled but its only the s orbital thats filled so its still reactive not so much as the Alkaline metals but still pretty reactive. Can someone explain it to me? Thanks!!
View full post »

Thread 'Resists for etching Aluminium with NaOH'

I'm trying to find a cheap DIY method to etch holes of various shapes through 0.3mm Aluminium sheet using 5-10% Sodium Hydroxide. The idea is to apply a resist to the Aluminium then selectively ablate it off using a diode laser cutter and then dissolve away the Aluminium using Sodium Hydroxide. By cheap I mean resists costing say £20 in small quantities. The Internet has suggested various resists to try including... Enamel paint (only survived seconds in the NaOH!) Acrylic paint (only...
View full post »

Similar threads

Chemistry Valence Bond Theory: Energy of a system with H and Cl atoms
Replies
6
Views
3K
How can I calculate heat of combustion and enthalpy using Hess's Law?
Replies
4
Views
3K
How Is the Enthalpy of Formation for Lithium Fluoride Calculated?
Replies
6
Views
4K
Calculating S-F Bond Energy in SF6 using Standard Heat of Formation Values
Replies
3
Views
2K
How Do You Calculate the Resonance Energy for CO2 Using Hess's Law?
Replies
6
Views
4K
Calculating lattice energy on ionic compound
Replies
1
Views
18K
What is the Energy Change for the Formation of 0.39 mol of KI(s)?
Replies
6
Views
2K
Help with enthelpy change and Hess's Law
Replies
1
Views
4K
Hess's Law and change of enthelpy
Replies
1
Views
28K
Lattice Energy - Hard question - I keep getting wrong answer
Replies
5
Views
5K

Hot Threads

Recent Insights

Back
Top