Question
Explain construction and uses of conductivity cell.
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a. Write the $\text{IUPAC}$ name of the following complex : $\ce{K[Cr(H_2O)_2(C_2O_4)_2]H_2O}$
b. Name the metal present in the complex compound of $(i)$ Haemoglobin $(ii)$ Vitamin $B-12$
→b. Name the metal present in the complex compound of $(i)$ Haemoglobin $(ii)$ Vitamin $B-12$
A compound $‘A\ ’$ having molecular formula $\ce{C_4H_{10}O}$ is found to be soluble in concentrated sulphuric acid. It does not react with sodium metal or potassium permanganate. On heating with excess of $HI,$ it gives a single alkyl halide. Deduce the structure of compound $A$ and explain all the reactions.
→Write the formula of the following complexes:
$i.$ Hexaammine platinum $(IV)$ chloride.
$ii.$ Dichloro tetrammine cobalt $(III)$ ion.
→$i.$ Hexaammine platinum $(IV)$ chloride.
$ii.$ Dichloro tetrammine cobalt $(III)$ ion.
What is semi permeable membrane ? Give examples.
If the density of some lake water is $1.25 g mL^{–1}$ and contains $92 g$ of $Na^+$ ions per $\ kg$ of water, calculate the molality of $Na^+$ ions in the lake.
→Match the reactions given in Column I with the names given in Column II.
| Column I | Column II | ||
| (i) |  |
(a) | Fittig reaction |
| (ii) |  |
(b) | Wurtz Fittig reaction |
| (iii) |  |
(c) | Finkelstein reaction |
| (iv) |  |
(d) | Sandmeyer reaction |
Propose the mechanism for the following reaction:
$\text{CH}_3\text{CHO}\ \ +\ \ \text{HCN}\xrightarrow{\ \ \text{a}+ }\ \ \text{CH}_3-\text{CH}-\text{CN}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | \\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{OH}$
→$\text{CH}_3\text{CHO}\ \ +\ \ \text{HCN}\xrightarrow{\ \ \text{a}+ }\ \ \text{CH}_3-\text{CH}-\text{CN}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | \\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{OH}$
Arrange the following in order of property indicated for set.
$\ce{(CH_3)_2CHCOOH, CH_3CH_2CH(Br)COOH, CH_3CH(Br)CH_2COOH } \ ($increasing order of their acid strengths$).$
→$\ce{(CH_3)_2CHCOOH, CH_3CH_2CH(Br)COOH, CH_3CH(Br)CH_2COOH } \ ($increasing order of their acid strengths$).$
Predict all the alkenes that would be formed by dehydrohalogenation of the halides with sodium ethoxide in ethanol and identify the major alkene :
2, 2, 3-Trimethyl-3-bromopentane.
2, 2, 3-Trimethyl-3-bromopentane.
Complete the following :
(i) $NaBr + H _2 SO _4 \xrightarrow[ MnO _2]{\Delta}$
(ii) $I _2+ Na _2 S_2 O _3 \longrightarrow$
→(i) $NaBr + H _2 SO _4 \xrightarrow[ MnO _2]{\Delta}$
(ii) $I _2+ Na _2 S_2 O _3 \longrightarrow$