PART - 1 CH - 5 Thermodynamics — Chemistry STD 11 Science — Question

1. Identify the oxidant and reductant in the following reactions:

1. $10\text{H}^++4\text{Zn}\text{(S)}+\text{NO}_3^-\text{(aq)}\\ \xrightarrow{ \ \ \ \ \ }4\text{Zn}^{2+}\text{(aq)}+\text{NH}_4^+\text{(aq)}+3\text{H}_2\text{O}$

2. $\text{I}_2\text{(g)}+\text{H}_2\text{(g)}\xrightarrow{ \ \ \ \ \ }2\text{Hl}\text{(g)}+\text{S}\text{(s)}$

2. Write the anode, cathode and net cell reaction for the following cell:

$\text{Zn}\text{(s)}|\text{Zn}\text{(aq)}||\text{Br}^-\text{(aq)}|\text{Br}_2\text{(g)},\text{pt}$

3. Give two main functions of salt bridge.

1. Which of the following are isostructural species. Give their structures.

$\text{NO}^+_2,\text{BCl}_3,\text{CO}_2,\text{BeCl}_2$

2. Which has most electronegativity of carbon? Why?

$\text{CH}_3-\text{CH}_3,\text{CH}=\text{CH}_2,\text{HC}\equiv\text{CH}$