Question
Explain the cyclic structure of glucose.

Answer

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A voltaic cell is set up at 25°C with the followinng half-cell:
Al | Al3+ (0.001M) and Ni | Ni2+ (0.50M)
Calculate the cell voltage $\text{E}^{\circ}_{\text{Ni}^{2+}/\text{Ni}}\Big[=-0.25\text{V,E}^{\circ}_{\text{Al}^{3+}/\text{Al}}=-1.66\text{V}\Big]$
Explain the mechanism and reactivity of nucleophilic addition reactions of carbonyl compounds (Aldehyde and ketone).
Derive the equation required for finding the activation energy.
Prove that boiling point elevation (AT) is proportional to the molality of solute present in the solution. Also find its mathematical form.
Explain relationship between $E _{\text {cell }}^{\circ}$ and equilibrium constant with the help of Nernst equation.
A mixed oxide of iron and chromium, FeOCr2O3 is fused with sodium carbonate in the presence of air to form a yellow coloured compound (A). On acidification the compound (A) forms an orange coloured compound (B), which is a strong oxidising agent.
  1. Identify the compounds (A) and (B).
  2. Write balanced chemical equation for each step.
Describe the physical properties of amines.
Answer the following questions:
Draw the structures of chromate and dichromate ions.
Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why?
  1. w/w (mass percentage)
  2. V/V (volume percentage)
  3. w/V (mass by volume percentage)
  4. ppm. (parts per million)
  5. x (mole fraction)
  6. M (Molarity)
  7. m (Molality)
Match the items of Column I and Column II.
  Column I   Column II
(i) Mathematical expression for rate of reaction. (a) Rate constant.
(ii) Rate of reaction for zero order reaction is equal to. (b) Rate law.
(iii) Units of rate constant for zero order reaction is same as that of. (c) Oder of slowest step.
(iv) Order of a complex reaction is determined by. (d) Rate of a reaction.