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If the price of electricity require to obtain 1 gram $M g$ from the solution of $M g ^{ 2 + }$ ion is Rs. $5 . 0 0$, then what will the price of electricity required to obtain 10 gram of Al from $Al ^{3+}$ ? (Atomic mass of $Al =$ 27 and $M g =24$ )
→Write the equations of the following reactions:
(i) Friedel-Crafts acetylation of benzene.
(ii) Gattermann-Koch aldehyde synthesis.
(iii) Gattermann aldehyde synthesis.
(i) Friedel-Crafts acetylation of benzene.
(ii) Gattermann-Koch aldehyde synthesis.
(iii) Gattermann aldehyde synthesis.
Consider the decomposition of hydrogen peroxide in alkaline medium which is catalysed by iodide ions.
$\text{2H}_2\text{O}_2\xrightarrow{\text{OH}^-}2\text{H}_2\text{O}+\text{O}_2$
This reaction takes place in two step as given below:
Step-I $\text{H}_2\text{O}_2+\text{I}^-\rightarrow\text{H}_2\text{O}_2+\text{IO}^-\text{ (slow)}$
Step-II $\text{H}_2\text{O}_2+\text{IO}^-\rightarrow\text{H}_2\text{O}_2+\text{I}+\text{O}_2\text{ (fast})$
→$\text{2H}_2\text{O}_2\xrightarrow{\text{OH}^-}2\text{H}_2\text{O}+\text{O}_2$
This reaction takes place in two step as given below:
Step-I $\text{H}_2\text{O}_2+\text{I}^-\rightarrow\text{H}_2\text{O}_2+\text{IO}^-\text{ (slow)}$
Step-II $\text{H}_2\text{O}_2+\text{IO}^-\rightarrow\text{H}_2\text{O}_2+\text{I}+\text{O}_2\text{ (fast})$
- Write the rate law expression and determine the order of reaction w.r.t. H2O2.
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Explain the following items:
Biocatalysts.
Biocatalysts.
In which of the following pairs will more electric current flow and why?
(a) KCl solution $25^{\circ} C$ and KCl solution at $50^{\circ} C$.
(b) $0.2 \quad M \quad CH _3 COOH$ solution and 2 M $CH _3 COOH$ solution.
(c) $NH _4 OH$ solution at $25^{\circ} C$ and at wire at $50^{\circ} C$.
(d) Al wire at $25^{\circ} C$ and Al wire at $50^{\circ} C$.
→(a) KCl solution $25^{\circ} C$ and KCl solution at $50^{\circ} C$.
(b) $0.2 \quad M \quad CH _3 COOH$ solution and 2 M $CH _3 COOH$ solution.
(c) $NH _4 OH$ solution at $25^{\circ} C$ and at wire at $50^{\circ} C$.
(d) Al wire at $25^{\circ} C$ and Al wire at $50^{\circ} C$.
Write the IUPAC name of Fe4 [Fe(CN)6]3.
Why is the vapour pressure of an aqueous solution of glucose lower than that of water?
The rate constant for a first order reaction is 60 s-1 How much time will it take to reduce the concentration of the reactant to 1/10th of its initial value?