JEE Mains · Chemistry · STD 12 - p -Block elements - ll
Heating white phosphorus with conc. \(NaOH\) solution gives mainly
- A \(Na _{3} P\) and \(H _{2} O\)
- B \(H _{3} PO\) and \(NaH\)
- C \(P ( OH )_{3}\) and \(NaH _{2} PO _{4}\)
- D \(PH _{3}\) and \(NaH _{2} PO _{2}\)
Answer & Solution
Correct Answer
(D) \(PH _{3}\) and \(NaH _{2} PO _{2}\)
Step-by-step Solution
Detailed explanation
\(P _{4}+3 NaOH +3 H _{2} O \rightarrow 3 NaH _{2} PO _{2}+ PH _{3}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Assuming \(1\,\mu\,g\) of trace radioactive element \(X\) with a half life of \(30\) years is absorbed by a growing tree. The amount of \(X\) remaining in the tree after \(100\) years is \(\times 10^{-1}\,\mu\,g\) \([ Given : \ln 10=2.303 ; \log 2=0.30]\)JEE Mains 2022 Medium
- How many grams of residue is obtained by heating \(2.76\) g of silver carbonate?
(Given: Molar mass of C, O and Ag are \(12\), \(16\) and \(108\) g mol\(^{-1}\) respectively)JEE Mains 2026 Medium - Given \(\left( i \right)\,2F{e_2}{O_3}\left( s \right) \to 4Fe\left( s \right) + 3{O_2}\left( g \right)\) \({\Delta _r}{G^o} = + 1487.0\,kJ\,mo{l^{ - 1}}\) \(\left( {ii} \right)\,2CO\left( g \right) + {O_2}(g) \to 2C{O_2}\left( g \right)\) \({\Delta _r}{G^o} = - 514.4\,kJ\,mo{l^{ - 1}}\) Free energy change, \(\Delta_rG^o\) for the reaction \(\,2F{e_2}{O_3}\left( s \right) + 6CO\left( g \right) \to 4Fe\left( s \right) + 6C{O_2}\left( g \right)\) will be .....\(kJ\, mol^{-1}\)JEE Mains 2018 Hard
- Match List - \(I\) with List - \(II\):
Choose the correct answer from the options given below:List - \(I\) (Pair of Compounds) List - \(II\) (Isomerism) (\(A\)) n-propanol and Isopropanol \((I)\) Metamerism (\(B\)) Methoxypropane and ethoxyethane \((II)\) Chain Isomerism (\(C\)) Propanone and propanal \((III)\) Position Isomerism (\(D\)) Neopentane and Isopentane \((IV)\) Functional Isomerism JEE Mains 2024 Medium - For a chemical reaction \(A \rightarrow B\), it was found that concentration of \(B\) is increased by \(0.2\, mol\,L^{-1}\) in \(30\, \mathrm{~min}\). The average rate of the reaction is \(......\times 10^{-1} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~h}^{-1}\). (Nearest integer)JEE Mains 2021 Medium
- \(KClO _3+6 FeSO _4+3 H _2 SO _4 \rightarrow KCl +3 Fe _2\left( SO _4\right)_3+3 H _2 O\) The above reaction was studied at \(300\,K\) by monitoring the concentration of \(FeSO _4\) in which initial concentration was \(10\,M\) and after half an hour became \(8.8\,M\). The rate of production of \(Fe _2\left( SO _4\right)_3\) is \(........\times 10^{-6}\,mol\,L ^{-1}\,s ^{-1}\).JEE Mains 2023 Hard
More PYQs from JEE Mains
- This question has statement \(1\) and statement \(2\) . Of the four choices given after the statements, choose the one that best describes the two statements.
Statement \(- 1\): A point particle of mass m moving with speed \(u\) collides with stationary point particle of mass \(M\). If the maximum energy loss possible is given as \(f\) \(\left( {\frac{1}{2}m{v^2}} \right)\) then \( f = \left( {\frac{m}{{M + m}}} \right)\) Statement \(-2\): Maximum energy loss occurs when the particles get stuck together as a result of the collision.JEE Mains 2013 Medium - Which one of the following properties is not shown by \(NO\)?JEE Mains 2014 Hard
- Consider the circle \(C: x^2+y^2-6x-8y-11=0\). Let a variable chord AB of the circle C subtend a right angle at the origin. If the locus of the foot of the perpendicular drawn from the origin on the chord AB is the circle \(x^2+y^2-\alpha x - \beta y - \gamma = 0\), then \(\alpha + \beta + 2\gamma\) is equal to ________.JEE Mains 2026 Hard
- Let the line L: \(\frac{ x -1}{2}=\frac{ y +1}{-1}=\frac{ z -3}{1}\) intersect the plane \(2 x+y+3 z=16\) at the point \(P.\) Let the point \(Q\) be the foot of perpendicular from the point \(R(1,-1,-3)\) on the line \(L\). If \(\alpha\) is the area of triangle \(PQR.\) then \(\alpha^2\) is equal to \(...........\).JEE Mains 2023 Hard
- \(2\, moles\) of helium gas is mixed with \(3\, moles\) of hydrogen molecules (taken to be rigid). What is the molar specific heat of mixture at constant volume ....... \(J/mol\, K\) ? \((R = 8.3\, J/mol\, K)\)JEE Mains 2019 Hard
- In the Bohr 's model of hydrogen-like atom the force between the nucleus and the electron is modified as \(F = \frac{{{e^2}}}{{4\pi {\varepsilon _0}}}\left( {\frac{1}{{{r^2}}} + \frac{\beta }{{{r^3}}}} \right)\), where \(\beta \) is a constant. For this atom, the radius of the \(n^{th}\) orbit in terms of the Bohr radius \(\left( {{a_0} = \,\frac{{{\varepsilon _0}{h^2}}}{{m\pi {e^2}}}} \right)\) isJEE Mains 2013 Hard