Electrochemistry — Chemistry STD 12 Science — Question

Write note on freons.

Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?

Explain the difference between electrolytic conduction and metallic conduction.

Write a note on nature of C-X Bond. ### Explain polarity of C-X bond in Haloalkane.

For the reaction:
2A + B → A₂B
The rate = k[A][B]² with k = 2.0 × 10^–6 mol^–2 L² s^–1. Calculate the initial rate of the reaction when [A] = 0.1 mol L^–1, [B] = 0.2 mol L^–1. Calculate the rate of reaction after [A] is reduced to 0.06 mol L^–1.

Write the Nernst equation for the cell reaction in the Daniel cell. How will the E_Cell be affected when concentration of Zn²⁺ ions is increased?

Using the standard electrode potentials given in Table 3.1, predict if the reaction between the following is feasible:
Ag⁺ (aq) and Cu(s)

Some alkylhalides undergo substitution whereas some undergo elimination reaction on treatment with bases. Discuss the structural features of alkyl halides with the help of examples which are responsible for this difference.

What is "semi permeable membrane"?

Write the reaction involved in the following:

1. Etard reaction.
2. Wolff-Kishner reduction.