Last seen: Jan 13, 2022
An isotropic solid has the same value of physical properties when measured along different directions. Therefore, the given solid, having the same val...
Similar to liquids, glass has a tendency to flow, though very slowly. Therefore, glass is considered as a super cooled liquid. This is the reason that...
The intermolecular forces of attraction that are present in solids are very strong. The constituent particles of solids have fixed positions i.e., the...
The intermolecular forces of attraction that are present in solids are very strong. The constituent particles of solids cannot move from their positio...
Molality = Moles of solute/Mass of solvent (in kg) 0.15 = Moles of benzoic acid/(250/1000) Moles of benzoic = (0.15 × 250)/1000 = 0.0375 Mola...
Number of moles of benzoic acid required = 0.15 × 250/ 1000 = 0.0375 moles Molar mass of benzoic acid = 7(12) + 6(1) + 2(16) = 84 + 6 + 32 = 122 g/...
When strongly electron withdrawing groups are present on alpha C atom of acetic acid, the acid strength and the degree of dissociation increases. This...
(i) Tea can be prepared by following steps: Take 10 0ml of water as solvent and boil it few minutes. (ii) Now add one tea spoon sugar, one tea s...
(a) At 313 K 62 g of potassium nitrate dissolved in 100 g of water. So to produce a saturated solution of potassium nitrate in 50 g of water we need 6...
Out of the above mixtures, sea water, air and soda water are solution. A solution is a homogeneous mixture of two or more substance.
Mass percentage of aspirin in acetonitrile = Mass of aspirin/Mass of acetonitrile × 100 = 6.5/450 × 100 = 1.44%
Let S M be the maximum possible molarity of CdS in aqueous solution. [Cd2+] = [S2-] = S M Solubility product Ksp = [Cd2+][S2-]6 × 10-16 = S × SS =...
Mass of sodium ions = 92 g Molar mass of sodium ions = 23g/mol Number of moles of sodium ions = 92g/23g/mol = 4 Mass of water = 1 kg Molal...
(i) Phenol is partially soluble in water. (ii) Toluene is water insoluble. (iii) Formic acid is water soluble. (iv) Ethylene glycol is water ...
n-Octane is non polar and can dissolve non-polar solutes. It cannot dissolve polar (and ionic) solutes. Cyclohexane is non polar. Hence, easily sol...
Let p be the vapour pressure of pure octane. The vapour pressure of solution will be 80/100p = 0.8 p. Molar mass of solute (M) and octane (m) ar...
The vapour pressure of water is 12.3 kPa at 300 K. We need to calculate the vapour pressure of 1 molal solution of a non-volatile solute in it. 1000...
The molar masses of heptane and octane are 100 g/mol and 114 g/mol respectively. 26 g of heptane corresponds to 26/100 = 0.26 moles 35 g of octa...
At boiling point, the vapour pressure of pure water is 1 atm or 1.004 bar. Vapour pressure of solution is 1.004 bar. Mass of solute is 2 g. Mas...
Positive deviation from Raoult's law occurs when the total vapour pressure of the solution is more than corresponding vapour pressure in case of ideal...