MCQ
Which of the following compound does not exist
  • $PCl_5$
  • B
    $BrF_5$
  • C
    $OF_2$
  • D
    $OF_6$

Answer

Correct option: A.
$PCl_5$
a
$I_2 + 10HNO_3 \to  2HIO_3 + 10NO_2 \uparrow  + 4H_2O$ Iodine in $HIO_3$ has $+5$ oxidation state.

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

Similar questions

Which of the following is correct
A $50\, watt$ bulb emits monochromatic red light of wavelength of $795\, \mathrm{~nm}$. The number of photons emitted per second by the bulb is $\mathrm{x} \times 10^{20}$. The value of $\mathrm{x}$ is ...... .

$\left[\right.$ Given $: \mathrm{h}=6.63 \times 10^{-34} \,\mathrm{Js}$ and $\left.\mathrm{c}=3.0 \times 10^{8} \,\mathrm{~ms}^{-1}\right]$

Ionic bonds are usually formed by combination of elements with
An important insecticide is obtained by the action of chloral on chlorobenzene. It is
Osmotic pressure of  $0.1\,M $ solution of $NaCl$ and $N{a_2}S{O_4}$ will be
In the series $HCl, HBr$ and $HI$, the boiling point increases in the order $HCl < HBr <  HI$. This is due to
For the following Assertion and Reason, the correct option is

Assertion : The $pH$ of water increases with increase in temperature.

Reason : The dissociation of water into $H^+$ and $OH^-$ is an exothermic reaction.

Equilibrium constant $(K_c)$ of $2HI_{(g)}  \rightleftharpoons  H_{2(g)} + I_{2(g)}$ is $5\times10^3$. What is the equilibrium concentration of $HI$, if equilibrium concentrations of $H_{2(g)}$ and $I_{2(g)}$ respectively are $2.2\times10^{-2}\, M$ and $2.2\times10^{-4}\, M$ ?
For the gaseous reaction, equilibrium constant is given

$XeF_6 + H_2O \rightleftharpoons  XeOF_4 + 2HF, \,\,\,\,K_1$

$XeO_4 + XeF_6 \rightleftharpoons  XeOF_4 + XeO_3F_2,\,\,\,\, K_2$

The equilibrium constant for the reaction

$XeO_4 + 2HF \rightleftharpoons  XeO_3F_2 + H_2O$ will be

Two beakers $A$ and $B$ containing pure water and aqueous solution are shown. What  will be observed gradually with passage of time ?