Download App

General Principles and Processes of Isolation of Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryGeneral Principles and Processes of Isolation of Elements2 Marks
Question
Which method is used for refining Zr and Ti? Explain with equation.
✓

Answer

Van Arkel method is used for refining Zr and Ti. In this method crude metal is heated with iodine to form volatile unstable compound. The compound is then decomposed to get pure metal.
$\text{Zr}(\text{s})+2\text{I}_{2}\ \xrightarrow{\ \ \ \ \ }\text{ZrI}_{4}$
$\text{ZrI}_{4}\ \xrightarrow{\ \ \ \ \ }\text{Zr}(\text{s})+2\text{I}_{2}$
$\text{Ti}+2\text{I}_{2}\ \xrightarrow{\ \ \ \ \ }\text{TiI}_{4}(\text{g})$
$\text{TiI}_{4}\ \xrightarrow{\ \ \ \ \ \ \ }\text{Ti}+2\text{I}_{2}$

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

Explore more

More "2 Marks Questions" from General Principles and Processes of Isolation of Elements→General Principles and Processes of Isolation of Elements — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Explain the observed $K_b$ order:
$Et_2NH > Et_3N > EtNH_2$ in aqueous solution.
→
The rate of reaction, $2NO + Cl_2→ 2NOCl$ is doubled when concentration of $Cl_2$ is doubled and it becomes eight times when concentration of both NO and $Cl_2$ are doubled. Deduce the order of the reaction.
→
Write the reaction of $t-$butyl methyl ether with conc. $HI$ and also explain its mechanism.
→
Give reason:
NO (Nitric oxide) is paramagnetic in the gaseous state but diamagnetic in the liquid and solid states.
→
The presence of Carbonyl group in glucose is confirmed by its reaction with hydroxylamine. Identify the type of carbonyl group present and its position. Give a chemical reaction in support of your answer.
→
Give plausible explanation for each of the following:Cyclohexanone forms cyanohydrin in good yield but $2, 2, 6-$ trimethylcyclohexanone does not.
→
Draw the structures of polar isomers of $\left[ Co ( e )_3\right]^{3+}$
→
Complete the following chemical reaction equation:$\text{p}_4(\text{s})+\text{NaOH(aq)}+\text{H}_2\text{O(l)}\rightarrow$
→
Arrange the following in order of property indicated for set.
$CH_3CHO, CH_3CH_2OH, CH_3OCH_3, CH_3CH_2CH_3 $(increasing order of boiling points$).$
→
What are inner transition elements? Decide which of the following atomic numbers are the atomic numbers of the inner transition elements: 29, 59, 74, 95, 102, 104.
→