PART - 2 CH - 9 Hydrocarbons — Chemistry STD 11 Science — Question

Identify the substance oxidised reduced, oxidising agent and reducing agent for each of the following reactions:

1. 2AgBr(s) + C₆H₆O₂(aq) → 2Ag(s) + 2HBr(aq) + C₆H₄O₂(aq)

2. HCHO(l) + 2[Ag(NH₃)₂]⁺(aq) + 3OH^-(aq) → 2Ag(s) + HCOO^-(aq) + 4NH₃(aq) + 2H₂O(l)

3. HCHO(l) + 2Cu²⁺(aq) + 5OH^-(aq) → Cu₂O(s) + HCOO^-(aq) + 3H₂O(l)

4. N₂H₄(l) + 2H₂O₂(l) → N₂(g) + 4H₂O(l)

5. Pb(s) + PbO₂(s) + 2H₂SO₄(aq) → 2PbSO₄(s) + 2H₂O(l)

How can we calculate the equivalent weight of oxidants and reductants?

Write short notes on the following:
(a) Sigma and pi bond
(b) Dipole torque
(c) Polarity of the bond.

What is the basic difference in approach between the Mendeleev’s Periodic Lawand the Modern Periodic Law?

What is the concentration of sugar (C₁₂H₂₂O₁₁) in mol L^–1 if its 20g are dissolved in enough water to make a final volume up to 2L?

Explain standard combustion enthalpy and atomisation enthalpy.

The ionization constant of propanoic acid is 1.32 × 10^–5. Calculate the degree of ionization of the acid in its 0.05M solution and also its pH. What will be its degree of ionization if the solution is 0.01M in HCl also?

Give the laws for IUPAC nomenclature of organic compounds have multiple groups and give examples.

Determine the empirical formula of an oxide of iron, which has 69.9% iron and 30.1% dioxygen by mass.