## Osmotic Pressure

Osmotic pressure : It can be defined as the additional pressure applied on the solution to prevent the entry of the solvent into the solution through semi-permeable membrane. It is represented by ‘π’.

## Analysis shows that nickel oxide has formula Ni_0.98 O_1.00 . What fractions of the nickel exist as Ni+2 and Ni+3?

Analysis shows that nickel oxide has formula Ni_0.98 O_1.00 . What fractions of the nickel exist as Ni+2 and Ni+3?

## If NaCl is doped with 10-3 mol % of SrCl2, what is the concentration of cation vacancy?

If NaCl is doped with 10-3 mol % of SrCl2, what is the concentration of cation vacancy?

## The compound CuCl has FCC structure like ZnS. Its density is 3.4 g cm-3. What is the length of the edge of the unit cell?

The compound CuCl has FCC structure like ZnS. Its density is 3.4 g cm-3. What is the length of the edge of the unit cell?

## KF has NaCl structure. What is the distance between K+ and F– in KF if density is 2.48 g cm-3?

KF has NaCl structure. What is the distance between K+ and F– in KF if density is 2.48 g cm-3?

## The density of copper metal is 8.95 g cm-3. If the radius of copper atom is 127.8 pm, is the copper unit cell a simple cubic or a body-centered cubic or a face-centered cubic? (Given At. Mass of Cu = 63.54 g/mol)

The density of copper metal is 8.95 g cm-3. If the radius of copper atom is 127.8 pm, is the copper unit cell a simple cubic or a body-centered cubic or a face-centered cubic? (Given At. Mass of Cu = 63.54 g/mol)

## X-ray studies of silver crystals show that it forms CCP lattice and edge length of the unit cell is 408.6 pm. Calculate the density of the silver (atomic mass = 107.9 u)

X-ray studies of silver crystals show that it forms CCP lattice and edge length of the unit cell is 408.6 pm. Calculate the density of the silver (atomic mass = 107.9 u)

## A solid AB has NaCl structure. If the radius of cation A is 110 pm, what is the possible radius of anion B ?

A solid AB has NaCl structure. If the radius of cation A is 110 pm, what is the possible radius of anion B ?

## Predict the structure of MgO crystal and coordination number of its cation in which cation and anion radii are equal to 65 pm and 140 pm respectively.

Predict the structure of MgO crystal and coordination number of its cation in which cation and anion radii are equal to 65 pm and 140 pm respectively.

## In corundum, Oxide ions are arranged in hexagonal close packing and Aluminium ions occupy two-third of the octahedral voids. What is the formula of corundum

In corundum, Oxide ions are arranged in hexagonal close packing and Aluminium ions occupy two-third of the octahedral voids. What is the formula of corundum

## In a cubic close packed structure of mixed oxides, the Lattice is made up of oxide ions (O2-), 1/8th of tetrahedral voids is occupied by divalent ions (A+2) while one half of octahedral voids are occupied by trivalent ions (B+3). What is the simplest formula of the oxide?

In a cubic close packed structure of mixed oxides, the Lattice is made up of oxide ions (O2-), 1/8th of tetrahedral voids is occupied by divalent ions (A+2) while one half of octahedral voids are occupied by trivalent ions (B+3). What is the simplest formula of the oxide?

## A solid is made of two elements P and Q. Atoms Q are in CCP arrangement, while atoms P occupy all the tetrahedral sites. What is the formula of the compound?

A solid is made of two elements P and Q. Atoms Q are in CCP arrangement, while atoms P occupy all the tetrahedral sites. What is the formula of the compound?

## A solid AB has CsCl type structure. The edge length of the unit cell is 404 pm. Calculate the distance of closest approach between A+ and B– ions?

A solid AB has CsCl type structure. The edge length of the unit cell is 404 pm. Calculate the distance of closest approach between A+ and B– ions?

## Xenon crystallizes in face-centered cubic lattice and the edge of the unit cell is 620 pm. What is the nearest neighbour distance and what is radius of xenon atom?

Xenon crystallizes in face-centered cubic lattice and the edge of the unit cell is 620 pm. What is the nearest neighbour distance and what is radius of xenon atom?

## Gold (atomic radius = 0.144 nm) crystallizes in a face centered unit cell. What is the length of the side of unit cell?

Gold (atomic radius = 0.144 nm) crystallizes in a face centered unit cell. What is the length of the side of unit cell?

## Calculate the number of atoms in a cubic based unit cell having one atom on each corner and two atoms on each body diagonal.

Calculate the number of atoms in a cubic based unit cell having one atom on each corner and two atoms on each body diagonal.

## Sodium crystallizes in a BCC unit cell. Calculate the approximate number of unit cells in 8.6 g of the sodium (atomic mass of Na = 23)

Sodium crystallizes in a BCC unit cell. Calculate the approximate number of unit cells in 8.6 g of the sodium (atomic mass of Na = 23)

## Calculate the approximate number of unit cells present in 1g of gold. Given that gold crystallizes in the face-centered cubic lattice. (Atom mass of gold = 197u)

Calculate the approximate number of unit cells present in 1g of gold. Given that gold crystallizes in the face-centered cubic lattice. (Atom mass of gold = 197u)