COMEDK · Chemistry · 22. p Block Elements (Group 15, 16, 17 & 18)
\(\mathrm{Pb}_{3} \mathrm{O}_{4}+4 \mathrm{HNO}_{3} \longrightarrow 2 \mathrm{~Pb}\left(\mathrm{NO}_{3}\right)_{2}+\mathrm{PbO}_{2}\) \(+2 \mathrm{H}_{2} \mathrm{O}\)
Which is true about the lead ions in \(\mathrm{Pb}_{3} \mathrm{O}_{4}\) ?
- A \(\mathrm{Pb}^{2+}\) reacts with \(\mathrm{HNO}_{3}\) to give lead nitrate.
- B \(\mathrm{Pb}^{4+}\) reacts with \(\mathrm{HNO}_{3}\) to give lead nitrate.
- C \(\mathrm{Pb}^{2+}\) reacts with \(\mathrm{HNO}_{3}\) to give \(\mathrm{PbO}_{2}\).
- D \(\mathrm{Pb}^{4+}\) reacts with \(\mathrm{HNO}_{3}\) to give \(\mathrm{PbO}_{2}\).
Answer & Solution
Correct Answer
(A) \(\mathrm{Pb}^{2+}\) reacts with \(\mathrm{HNO}_{3}\) to give lead nitrate.
Step-by-step Solution
Detailed explanation
\(\mathrm{Pb}_{3} \mathrm{O}_{4}\) is a mixture of \(\mathrm{PbO}_{2}+\mathrm{PbO}\) and only \(\mathrm{PbO}\) i.e., \(\mathrm{Pb}^{2+}\) reacts with \(\mathrm{HNO}_{3}\) to form \(\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}\).
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
- Two subatomic particles 1 and 2, with the same kinetic energies have their de- Broglie wavelengths as \(\lambda_1 \& \lambda_2\) and masses as 3 m and 6 m respectively.
Determine the ratio \(\lambda_1: \lambda_2\).COMEDK 2025 Medium - Maximum number of molecules of methyl iodide that can react with one molecule of methyl amine isCOMEDK 2012 Hard
- Strongest reducing agent among the following is
I. \(\mathrm{Na}^{+}+e^{-} \longrightarrow \mathrm{Na}(s) \quad E^{\circ}=-2.71 \mathrm{~V}\)
II. \(\mathrm{Al}^{3+}+3 e^{-} \longrightarrow \mathrm{Al}(s) \quad E^{\circ}=-1.66 \mathrm{~V}\)
III. \(\mathrm{F}_{2}(g)+2 e^{-} \longrightarrow 2 \mathrm{~F}^{-} \quad E^{\circ}=+2.87 \mathrm{~V}\)
IV. \(2 \mathrm{H}_{2} \mathrm{O}+2 e^{-} \longrightarrow \mathrm{H}_{2}(g)+2 \mathrm{OH}^{-}(a q); \quad E^{\circ}=-0.83 \mathrm{~V}\)COMEDK 2015 Medium - Which of the following are not path functions?
I. \(H-T S\)
II. W
II. \(q\)
IV. \(q+W\)COMEDK 2022 Easy - Which one of the following compounds shows Geometrical isomerism?COMEDK 2024 Medium
- The density of a gas \(A\) is thrice that of a gas \(B\) at the same temperature. The molecular weight of gas \(B\) is twice that of \(A\). What will be the ratio of pressure acting on \(B\) and \(A\) ?COMEDK 2021 Medium
More PYQs from COMEDK
- The maximum number of possible interference maxima when slit separation is equal to 4 times the wavelength of light used in a double slit experiment isCOMEDK 2018 Easy
- When a body of refractive index \(\boldsymbol{\mu}=\mathrm{1 . 4}\) is put into a liquid, the body becomes invisible. What would be the refractive index of the medium?COMEDK 2025 Easy
- \(\text { From the following pair of compounds, identify the incorrect pair in terms of the covalent character. }\)COMEDK 2024 Medium
- What volume of \(0.2 \mathrm{M} \mathrm{CH}_3 \mathrm{COOH}\) needs to be added to \(100 \mathrm{ml}\) of \(0.4 \mathrm{M} \mathrm{CH}_3 \mathrm{COONa}^2\) solution to prepare a buffer of pH equal to 4.91 ? (\(\mathrm{pK}_{\mathrm{a}}\) of \(\mathrm{CH}_3 \mathrm{COOH}\) is 4.76)COMEDK 2025 Medium
- Chords of the circle \(x^{2}+y^{2}=r^{2}\) touch the hyperbola \(\frac{x^{2}}{a^{2}}-\frac{y^{2}}{b^{2}}=1\). The locus of the mid-points of the chords isCOMEDK 2017 Hard
- A charge of \(+1 \mathrm{C}\) is moving with velocity \(\vec{V}=(2 \mathrm{i}+2 \mathrm{j}-\mathrm{k}) \mathrm{ms}^{-1}\) through a region in which electric field \(\vec{E}=(\mathrm{i}+\mathrm{j}-3 \mathrm{k}) \quad \mathrm{NC}^{-1}\) and magnetic field \(\vec{B}=(\mathrm{i}-2 \mathrm{j}+3 \mathrm{k}) \mathrm{T}\) are present. The force experienced by the charge isCOMEDK 2024 Medium