Question
Explain different definitions of oxidation and reduction processess with example.

Answer

self

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

  1. At 473K, equilibrium constant, K for decomposition of $PCl_5$ is $8.3 \times 10^{-3}$. If decomposition is depicted as
$\text{PCl}_5(\text{s})\rightleftharpoons\text{PCl}_3(\text{s})+\text{Cl}_2(\text{g});$
$\Delta_\text{r}\text{H}^\text{o}=124.0\text{kJ mol}^{-1}$
  1. Write an expression for $K_c$ for the reaction.
  2. What is the value of $K_c$ for the reverse reaction at same temperature.
  3. What would be the effect on $K_c$ if:
  1. The pressure is increased?
  2. The temperature is increased?
  1. Write equilibrium constant for the following reactions:
  1. $\text{BaCO}_3(\text{s})\rightleftharpoons\text{BaO(s)}+\text{CO}_2(\text{g})$
  2. $\text{CH}_4(\text{g})+2\text{O}_2(\text{g})\rightleftharpoons\text{CO}_2(\text{g})+2\text{H}_2\text{O(g)}$
  1. The reaction quotient of a reversible reaction is $Q_C$ and the equilibrium constant is $K_c$. What do you conclude for the reaction if $Q_c < K_c$?
  2. State Le Chatelier's principle.
  3. In qualitative analysis, $NH_4Cl$ is added before adding $NH_4OH$ solution for testing of III group radicals [$Fe^{3+}, Cr^{3+}$ and $Al^{3+}$]. Explain by using concept of common ion effect.
What is the principle of adsorption chromatography? Explain column chromatography and thin layer chromatography with diagram.
"For classification of elements atomic number is more appropriate in comparison to atomic mass." Comment.
Describe the method, which can be used to separate two compounds with different solubilities in a solvent S.
In what ways lithium shows similarities to magnesium in its chemical behaviour?
When a mixture of ammonium chloride and potassium dichromate was heated, a stable colourless gas ‘A’ is evolved which did not support combustion, but Mg continued burning in it. The gas reacted with $CaC_2$ in electric furnace forming a solid 'B'. Which was slowly hydrolysed by water forming a insoluble substance 'C' and a solution of substance 'D' which turns red litmus blue and gives white fumes with conc HCl to form ‘E'. Identify A to E and write chemical reactions involved.
At 700K, equilibrium constant for the reaction:
$\text{H}_2\text{ (g) + I}_2\text{ (g)}\rightleftharpoons2\text{HI (g)}$ is 54.8. If $0.5 ~mol L^{–1}$ of $HI(g)$ is present at equilibrium at 700K, what are the concentration of $H^2(g)$ and $I^2(g)$ assuming that we initially started with HI(g) and allowed it to reach equilibrium at 700K?
Discuss the chemistry of Lassaigne's test.
  1. Complete the equations for:
  1. $\text{BF}_3+\text{LiH}\rightarrow$
  2. $\text{B}_2\text{H}_6+\text{H}_2\text{O}\rightarrow$
  1. Give reasons:
  1. Conc $HNO_3$ is transported in aluminium container.
  2. Graphite is used as lubricant.
  3. Lead (IV) chloride is highly unstable towards heat.