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Explore Class 12 Chemistry past and model questions by chapter, year, marks and question type.
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Give the reaction for the formation of $A$ by using Grignard's reagent.
Standard enthalpy of combustion of $\text{C (g)}$, $\text{H}_2\text{(g)}$ and $\text{C}_2\text{H}_2\text{(g)}$ are $-394\ \text{kJ mol}^{-1}$, $-286\ \text{kJ mol}^{-1}$ and $-1300\ \text{kJ mol}^{-1}$ respectively. Calculate enthalpy of formation of acetylene.
Illustrate the Hess law of constant heat summation.
$0.1\ \text{M}$ ethanoic acid is $1.34%$ ionized. Find its dissociation constant.
Will strong electrolytes obey this expression, why?
What information can you obtain from this expression?
Derive it.
Give an example of the following reactions
(a) Reimer–Tiemann’s reaction
(b) Perkin’s condensation reaction
(c) Williamson’s ether synthesis
(d) Cannizzaro’s reaction
(e) Sandmeyer’s reaction
Convert $(X)$ into acetylene.
Predict the new compound by treating $(X)$ with concentrated acid.
Write the reactions for the formation of $(X)$ from ethanol.
Predict the organic compound $(X)$
Make the products by reacting with dilute ?
Predict the electronic configuration of this metal $A$.
Identify $A$, $B$ and $C$ with sequence of chemical reaction.
Will the reaction occur:
Occur? Give reasons. $(1)$
With $1\ \text{M}$ solution of the ions, what will be EMF of cell?
Construct the galvanic cell by pointing out cathode and anode.
the rate of reaction when the concentration of $A$ and $B$ is $0.5\ \text{M}$ and $0.4\ \text{M}$, respectively.
the value of the rate constant of the reaction