MCQ
aq. $NaOH + P_4$ (white) $\rightarrow PH_3 + X;$ compound $X$ is
- ✓$NaH_2PO_2$
- B$NaHPO_4$
- C$Na_2CO_3$
- D$NaHCO_3$
✓
Answer
Correct option: A.
$NaH_2PO_2$
a
The reaction is,
The reaction is,
$P _4+3 NaOH +3 H _2 O \rightarrow PH _3+3 NaH _2 PO _2$
White phosphorus react with sodium hydroxide and water to produce phosphine and sodium hypophosphite. Sodium hydroxide - cold, concentrated solution. This reaction takes place slow.
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
There is no $S - S$ bond in
→Coagulation of egg, on heating is because of :
Which of the following hydrogens is most easily abstracted on reaction with bromine free radicals,$ Br^{\cdot }$ ?
→Half-lives of a first order and a zero order reaction are same. Then the ratio of the initial rates of first order reaction to that of the zero order reaction is
STATEMENT-$1$: Molecules that are not superimposable on their mirror images are chiral because
→STATEMENT-$2$: All chiral molecules have chiral centres.
Mercury is the only metal which is liquid at $0\,^oC$. This is due to its
→The standard reduction potentials of $4$ elements are given below. Which of the following will be the most suitable reducing agent
→$I = -3.04\,V$,
$II = -1.90\,V$,
$III = 0\,V$,
$IV = 1.90\,V$
Which one has maximum oxidation number of phosphorous
Identify $Z$ in the following series ${C_2}{H_5}I\xrightarrow{{Alco.\,\,KOH}}X\xrightarrow{{B{r_2}}}Y\xrightarrow{{KCN}}Z$
→A compound $A $ has a molecular formula ${C_2}C{l_3}OH.$ It reduces Fehling solution and on oxidation gives a monocarboxylic acid $(B)$ . $A$ is obtained by action of chlorine on ethyl alcohol. $ A $ is
→