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The radius ratio for AgBr is intermediate. Thus it shows both frenkel and schottky defects.
The major defect in AgBr is the Frenkel defect. It has a rocksalt structure i.e. CCP lattice of of Br with atoms of Ag occupying all octahedral holes.Ag moves from octahedral to tetrahedral sites causing only cations to precipitate.
Schottky defect arise due to missing of ions from their lacttice point and frenkel arise when the mmissing ions occupy interstitial sites.
in AgBr, ag+ ion is small in size and when removed from lacttice point they can occupy interstitial site and therefore show both frenkel and schottky defect. SCHOTTKY Defect in AgBr is exhibited due to precipitation of both Cations and Anions.
What else can I help you with?
Why AgBr shows both frenkel and schotky defect?
When the both the cations and anions are absent from the crystal lattice it is called Schottky defect. This defect is shown when the anions and cations have comparable size. The Frenkel defect is shown by ionic molecules when their is a large difference in the size of anions and cations. The smaller anions are very much mobile and they occupy interstitial site. AgBr has cations and anions with comparable size and hence it shows Schottky defect but the Ag+ ion is very much mobile and it easily occupies interstitial place getting dislocated from its original place, that's why the ionic crystal AgBr shows both Schottky and Frenkel defects.
How do you set up the equation to determine the concentrations of silver ions and bromide ions given the balanced equation AgBr Ag Br- the Ksp value of silver bromide at 25 degrees is 5x10-13?
[Note: The answer has been corrected as follows:] The equilibrium reaction is: AgBr(solid) <<---> Ag+aq + Br-aq A solution equilibrium constant, Ksp, is the product of the ion concentrations in water (aq): Ksp = [Ag+aq][Br-aq] = 5x10-13 and since [Ag+aq] = [Br-aq] when only AgBr is dissolved (pure solution), you can calculate (by taking square root of Ksp) that: [Ag+aq] = [Br-aq] = SQRT(5x10-13) = 7.1*10-7 mol/L By having such a small solution constant, you can hopefully see that there will be MUCH more AgBr(solid) than ions(aq), because silver bromide is rather insoluble.
What is the difference between vacancy and self interstitial crystalline defects?
the simplest of the point defects is a vacancy or vacant lattice site ,one normally occupied from which atom is missing is called vacancy a self-interstitial is an atom from a crystal that is crowded into an interstitial site , a small void space that under ordinary circumstances is not occupied.
Which is a spectator ion from the following complete ionic equation Ag aq no3-aq k aq br-aq agbrs k aq no3- aq?
Potassium (K+) is a spectator ion in this reaction. It appears both on the reactant side (K+ and NO3-) and product side (K+ and NO3-), but does not participate in the actual reaction forming the solid silver bromide (AgBr).
What is difference between melt through and burn through in welding defects?
In welding, "melt through" occurs when excessive heat causes the base metal to be penetrated, resulting in a hole. "Burn through" happens when the heat is so intense that the molten metal actually burns away portions of the base metal, leading to thinning or complete loss of material. Both defects can weaken the weld joint and compromise its integrity.
Why AgBr shows both frenkel and schottky defect?
AgBr can exhibit both Frenkel and Schottky defects due to the presence of both cation (Ag+) and anion (Br-) vacancies in its crystal structure. Frenkel defect occurs when a cation occupies an interstitial site, while a Schottky defect involves the simultaneous absence of a cation and anion from their respective lattice sites. The relative sizes of the cation and anion in AgBr make both types of defects possible.
Why AgBr shows both frenkel and schotky defect?
When the both the cations and anions are absent from the crystal lattice it is called Schottky defect. This defect is shown when the anions and cations have comparable size. The Frenkel defect is shown by ionic molecules when their is a large difference in the size of anions and cations. The smaller anions are very much mobile and they occupy interstitial site. AgBr has cations and anions with comparable size and hence it shows Schottky defect but the Ag+ ion is very much mobile and it easily occupies interstitial place getting dislocated from its original place, that's why the ionic crystal AgBr shows both Schottky and Frenkel defects.
What is the effect of frenkel schottky defect on elictrical conductivity?
Both Frenkel and Schotty defects improve the electrical conductivity of an ionic crystal.
What is difference between shotkey defect and frankel defect?
1).schottky defect arises due to departue of ions (both cation and anion in equal ratio) from crystal lattice leaving holes that favour conductivity. The equal no of ions depart because to maintain the electrical neutrality of crystal. It was discovered by walter.H schottky in 1930. But in frenkel defect ions(cations) are missing from there normal lattice site and occupying an interstitial site between the lattice points. They dont depart from crystal lattice. Because no departure occure so crystal remain electrically neutral. It was discovered by Yakov frenkel in 1926. 2) schottky defect is only vacancy defect but frenkel defect is vacancy as well as interstitial defect. 3). Schottky defect decreases density and strength of the crystal. But frenkel defect doesnt affect density. 4).schottky defect is shown by the ionic solids having high coordination no and approx. same size of cation and anion(i.e r+ve/r-ve approaches to 1) While frenkel defect is shown by the compound having low coordination no and size of anion larger than cation(i.e r+ve/r-ve approches the minimum value). By Sandeep Singh Lingwal Srinagar, Uttrakhand
Which diodes has a characteristic curve with both a forward and a reverse breakover?
Schottky
How does zim like dib?
He doesn't but if you are a ZADR supporter then I guess you could go with that they are both defects of their species and even defects need love.
Calculate the molar solubility of AgBr in a 3.0 x 10-2 M silver nitrate AgNO3 solution?
AgBr + Ag(NO)3 ----------> Ag+ + Br- Disregard Ag(NO)3 b/c of the common ion Ag and the fact that (NO)3 is a spectator ion. You use the Ksp of AgBr from the index in your book that equals 5.0*10^-13 If you look at your above equation, Ksp = [Ag] [Br] You know Ksp = 5.0*10^-13 You have also been given the concentration of Ag from Ag(NO)3 = 3.0*10^-2. You use this number because remember NO3 is always a spectator ion so [Ag] will equal the [Ag(NO)3] You equation should look like this. (Forget about doing the I.C.E on this one. Its not necessary. 5.0*10^-13-= [3.0*10^-2] [Br] Simply solve for [Br] by dividing 5.0*10^-13 by 3.0*10^-2. [Br] = 1.66*10^-11. Round for sig figs to = 1.7*10-11
Can you get an Army medical waiver if you have birth defects in both arms?
what are the birth defects? Can you still function normally? if so I'd say yes; if it is a handicap most likely no.
What is done during a cardiac catheterization to confirm septal defects?
To confirm septal defects, a catheterization measures oxygen content on both the left and right sides of the heart.
How many babies are born in the US each year with birth defects?
Approximately 120,000 babies in the United States are born each year with birth defects. These defects can range from mild to severe and may be caused by genetic factors, environmental exposures, or a combination of both. Early detection and intervention can help manage the effects of birth defects.
Are there any defects involved in cases where parents of a child are both o positive?
Not due to blood type.
What two types of defects does a cancerous cell possess?
Cancerous cells can have both genetic defects, such as mutations in key oncogenes or tumor suppressor genes, and functional defects, such as uncontrolled proliferation and evasion of cell death mechanisms. These defects allow cancer cells to grow uncontrollably and spread to other parts of the body.
