Solution

AgCl shows Frenkel defect. Due to large difference in size of cation (Ag+) and anion (Cl–), AgCl shows Frenkel defect.

Solution

Boiling point : (CH₃)₃N < C₂H₅NH₂ < C₂H₅OH

Solution

Medicines are more effective in colloidal state because colloids have larger surface area and hence their absorption, assimilation and digestion become easier.
or
Emulsions are the colloids made up of liquids dispersed in liquid dispersion medium whereas gels are liquids dispersed in solid dispersion medium.
For example, milk is an emulsion whereas butter is a gel.

Solution

Nucleophiles which have more than one donor site (nucleophilic centre) are called ambident nucleophiles.
For example : CN⁻, SCN⁻

Solution

Glucose is an aldohexose and fructose is a ketohexose.
OR

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Solution

Solution

XeF₂ undergoes hydrolysis to give Xe, HF and O₂.
2XeF₂ (s) + 2H₂O (l) → 2Xe (g) + 4HF (aq) + O₂(g)

2. MnO₂ is heated with conc. HCl to give MnCl₂, Cl₂ and H₂O
MnO₂ + 4HCl → MnCl₂ + Cl₂ + 2H₂O
or
(i) Increasing acidic character
H₂O < H₂S < H₂Se < H₂Te
In binary acids, as the size of the element increases the bond becomes weaker and hence become a better acid due to easy release of H+ ion.

(ii) Decreasing bond enthalpy is
H–F > H–Cl > H–Br > H–I
As the size of halogen decreases the effective nuclear charge increases and hence, the bond enthalpy increases.

Solution

Raoult’s law states that for any solution the partial vapour pressure of each volatile component in the solution is directly proportional to its mole fraction. The solutions which obey Raoult’s law at all concentrations are known as ideal solutions. The two important properties of ideal solutions are as follows:
1. Enthalpy of mixing of the pure components to form the solution is zero
ΔHmix = 0
2. The volume of mixing of the pure components to form the solution is zero
ΔVmix = 0

Solution

i) Rate law of the reaction is given by:
Rate = -d [H₂O]/dt = k [H₂O₂][I⁻]
(ii) As the rate law shows that the reaction is first order with H2O2 and I– both, hence the overall order of the reaction becomes 1 + 1= 2.
(iii) Step no. 1 is the slowest among two steps, hence this is the rate-determining step.

Solution

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