MCQ
Which of the following statement is correct for oleum ?
- ✓It is prepared by adsorption of $SO _{3}$ in conc. $H _{2} SO _{4}$
- BIt contains $O-O$ groups
- CI has six $OH $ groups
- DNone of these
✓
Answer
Correct option: A.
It is prepared by adsorption of $SO _{3}$ in conc. $H _{2} SO _{4}$
a
Oleum is manufactured by adsorption of sulphur trioxide in concentrated sulphuric acid. The reaction is as follows:
Oleum is manufactured by adsorption of sulphur trioxide in concentrated sulphuric acid. The reaction is as follows:
$H _{2} SO _{4}(l)+ SO _{3}( g ) \rightarrow H _{2} S _{2} O _{7}($ oleum $)$
The structure of oleum is shown below :
$\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||}
\end{array}} \\
{H - O - S - O - S - O - H} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O}
\end{array}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
If the solubility product of $AB _{2}$ is $3.20 \times 10^{-11}\, M ^{3}$,
→then the solubility of $AB _{2}$ in pure water is......... $\times 10^{-4}$ $mol$ $L ^{-1}$.
[Assuming that neither kind of ion reacts with water]
For the reaction , $A + B \to 2C + D$ which one is the incorrect statement ?
→What will happen if $LiAl{H_4}$ is added to an ester
→Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?
What is molarity of a solution of $HCl $ which contains $49\%$ by weight of solute and whose specific gravity is $1.41$
→Given below are two statements :
→Statement $I$: In group $13$, the stability of $+1$ oxidation state increases down the group.
Statement $II$: The atomic size of gallium is greater than that of aluminium.
In the light of the above statements, choose the most appropriate answer from the options given below:
Amphoteric oxide(s) of $Mn$ is/are
→Which of the following combination amongst the four fischer projections represents the enantiomers
Strongest conjugate base is
The structural formula of hypophosphorus acid is