Which of the cations in more stable ? - Vidyadip

MCQ

Which of the cations in more stable ?

A
$\begin{array}{*{20}{c}}
{H\,\,\,\,\,\,} \\
{\,|\,\,\,\,\,\,\,\,\,} \\
{R' - {C^ + } - OR}
\end{array}$
✓
$\begin{array}{*{20}{c}}
{H\,\,\,\,} \\
{|\,\,\,\,\,} \\
{R' - C = \mathop O\limits^ + R}
\end{array}$
C
both equal
D
both are unstable

✓

Answer

Correct option: B.

$\begin{array}{*{20}{c}}
{H\,\,\,\,} \\
{|\,\,\,\,\,} \\
{R' - C = \mathop O\limits^ + R}
\end{array}$

b
Although $(b)$ has positive charge on $O$ (an electronegative element), it is more stable because here every atom has octet of electrons.

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 "M.C.Q (1 Marks)" from 8.4. Organic chemistry reaction mechanism→8.4. Organic chemistry reaction mechanism — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

The shape of a molecule depends on:

$\Delta_{\text {vap }} \mathrm{H}^{\ominus}$ for water is $+40.49 \mathrm{~kJ} \mathrm{~mol}^{-1}$ at 1 bar and $100^{\circ} \mathrm{C}$. Change in internal energy for this vapourisation under same condition is. . . . . . . . . . $\mathrm{kJ}$ $\mathrm{mol}^{-1}$. (Integer answer) (Given $\mathrm{R}=8.3 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$ )

H₂SO₅+ H₂O → H₂SO₄ + H₂O₂
Oxidation number of sulphur in H₂SO₅in the above reaction is:

An example of a disproportionation reaction is

The pH of mixture of $50 mL \frac{ N }{10} NaOH$ and 10 ml $\frac{ N }{2} H _2 SO _4$ is :

Match List $I$ with List $II$ with correct code

List $I$	List $II$
$1E_1\,\,1E_2\,\,1E_3$
$(A)$ $1510$ $-$ $-$	$(1)$ $H$
$(B)$ $495$ $6500$ $10200$	$(2)$ $Li$
$(C)$ $840$ $1630$ $13100$	$(3)$ $Be$
$(D)$ $600$ $2050$ $3100$	$(4)$ $B$

( $1E$ in $KJ\,mol^{-1}$ )

An electric discharge is passed through a mixture containing $50\, c.c$. of ${O_2}$ and $50 \,c.c.$ of ${H_2}$. The volume of the gases formed $(i)$ at room temperature and $(ii)$ at $110\,^o C$ will be

For ionising an excited hydrogen atom, the required in $eV$ will be -

$XeF_4$ has total $36$ valence electrons. Select correct for uses of valence electrons in $XeF_4$

A physician wishes to prepare a buffer solution at $pH = 3.58$ that efficiently resists changes in $pH$ yet contains only small concentration of the buffering agents. Which of the following weak acids together with its sodium salt would be best to use