Question
Describe the methods of studying various first order reactions with examples.
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Match the complex ions given in Column I with the colours given in Column II and assign the correct code:
Code:
| | Column I (Complex ion) | | Column II (Colour) |
| a. | [Co(NH3)6]3+ | 1. | Violet |
| b. | [Ti(H2O)6]3+ | 2. | Green |
| c. | [Ni(H2O)6]2+ | 3. | Pale blue |
| d. | [Ni(H2O)4(en)]2+ (aq) | 4. | Yellowish orange |
| | | 5. | Blue |
- A (1), B (2), C (4), D (5).
- A (4), B (3), C (2), D (1).
- A (3), B (2), C (4), D (1).
- A (4), B (1), C (2), D (3).
Explain oxidation and reduction reactions of carbonyl compounds.
- What type of deviation is shown by a mixture of ethanol and acetone? Give reason.
- A solution of glucose (molar mass = 180 g mol–1) in water is labelled as 10% (by mass). What would be the molality and molarity of the solution?
(Density of solution = 1.2 g mL–1).
Explain the general methods of preparation of amines.
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Discuss aldol condensation in detail.
Answer the following questions:
Account for the following:
- Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.
- Diazonium salts of aromatic amines are more stable than those of aliphatic amines.
Match the laws given in Column I with expresions given in Column II.
→| Column I | Column II | ||
| i. | Raoult’s law | a. | $\Delta\text{T}_\text{f}=\text{K}_\text{f}\text{m}$ |
| ii. | Henry’s law | b. | $\pi=\text{CRT}$ |
| iii. | Elevation of boiling point | c. | $\text{p}=\text{x}_1\text{p}^0_1+\text{x}_2\text{p}^0_2$ |
| iv. | Depression in freezing point | d. | $\Delta\text{T}_\text{b}=\text{K}_\text{b}\text{m}$ |
| v. | Osmotic pressure | e. | $\text{p}=\text{K}_\text{H}\cdot\text{x}$ |
(a) Draw the structure of a galvanic cell and also describe the reaction taking place in it.
(b) What happens when opposite external potential is applied in the galvanic cell system? Explain.
(b) What happens when opposite external potential is applied in the galvanic cell system? Explain.
An aromatic compound ‘A’ on treatment with CHCl3/ KOH gives two compounds ‘B’ and ‘C’. Both B and C give the same product ‘D’ when distilled with zinc dust. Oxidation of D gives E having molecular formula C7H6O2. The sodium salt of E on heating with sodalime gives F which may also be obtained by distilling A with zinc dust. Identify A to F.