Question
Asked Oct 29, 2019
439 views

The number of vacancies in some hypothetical metal increases by a factor of 5 when the temperature is increased from 1060 K to 1160 K. Calculate the energy (in kJ/mol) for vacancy formation assuming that the density of the metal remains the same over this temperature range.

check_circle

Expert Answer

Step 1

The presence of vacancy in a crystal is a kind of point defect. The number of vacancies in a crystal is calculated by the formula shown below.

help_outline

Image Transcriptionclose

= N exp N

fullscreen
Step 2

Given data:

help_outline

Image Transcriptionclose

Initial number of vacancy (N1)=1 Final number of vacancy (N2)=5 Initial temperature 1060 K Final temperature = 1160 K

fullscreen
Step 3

The energy for the vacancy formation is cal...

help_outline

Image Transcriptionclose

-(1) N N exp 11 Where, N is the number of vacancy N is the concentration of atomic sites Q, is the energy of vacancy formation. kg is the boltzmann constant (1.38x105 J K1 mol-1). T is the temperature

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: Calculate the standard enthalpy of reaction, Δ?∘rxn,, of each of the given acid–base neutralization ...

A: since there are more than three sub-parts, we are authorised to answer only the first three sub part...

question_answer

Q: CaCO3 (aq) + 2H2O+ (aq)  -->  Ca2+ (aq) + CO2 (aq) + 3H2O (l) A.) How many moles of stomach acid ...

A: Click to see the answer

question_answer

Q: A balloon (filled with N2) has a volume of 2.2 L at room temperature (25oC).  If the same balloon is...

A: Given:Temperature T1 = 25oC = 25+273 = 298 KVolume V1 = 2.2 L.Temperature T2 = -16 oC = -16 +273 = 2...

question_answer

Q: Part C HЕr Express your answer as a chemical equation. Identify all of the phases in your answer. AX...

A: The given equation:

question_answer

Q: Give the molecular formula, the line bond structural formula, the condensed structural formula, and ...

A: The molecular formula of octane is given,Octane is saturated hydrocarbon it consists of eight carbon...

question_answer

Q: Use standard enthalpies of formation to determine ΔHorxnfor: 2Al(s) + 3Cl2(g) → 2AlCl3(s) Enter in k...

A: Given:2Al(s) + 3Cl2(g) → 2AlCl3(s)

question_answer

Q: Suppose a current of  50.A  flows through a copper wire for  9.0  minutes. Calculate how many mo...

A: Click to see the answer

question_answer

Q: Fpr Substitution Reactions Experiment 1. Assume you can use the same condenser for the distillation ...

A: Hey, since there are multiple questions posted, we will answer first question. If you want any speci...

question_answer

Q: Gallium has a simple cubic unit cell. It has a molar mass of 69.72 g/mol and a density of 5.91 g/cm³...

A: Simple cubic unit cell:No. of atoms present in unit cell =1 Density of Galliumc5.91g/cm3Atomic mass ...