COMEDK · Chemistry · 19. Chemical Kinetics
\(\mathrm{N}_2 \mathrm{O}_5\) decomposes to \(\mathrm{NO}_2\) and \(\mathrm{O}_2\) and follow first order kinetics. After 50 minutes, the pressure inside the vessel increases from 50 mm Hg to 87.5 mm Hg. The pressure of the gaseous mixture after 100 minutes at constant temperature will be [Nearest integer]
- A 108
- B 107
- C 106
- D 109
Answer & Solution
Correct Answer
(C) 106
Step-by-step Solution
Detailed explanation
Total pressure at \(t=50 \mathrm{~min}\) is \(\begin{array}{r} 50-p_1+2 p_1+\frac{p_1}{2}=87.5 \mathrm{~mm} \mathrm{Hg} \\ p_1=\frac{37.5}{1.5}=25 \mathrm{~mm} \mathrm{Hg} \end{array}\) Since, \(t=50\) minutes is the half life period for reaction. Thus \(t=100 \mathrm{~min}\) is…
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
- For a cell \(2 \mathrm{M}_{(\mathrm{S})}+\mathrm{O}_2(\mathrm{~g})+4 \mathrm{H}^{+} \rightarrow 2 \mathrm{M}^{2+}(\mathrm{aq})+2 \mathrm{H}_2 \mathrm{O}_{(\mathrm{l})}\) the \(\mathrm{E}^0\) cell \(=+1.67 \mathrm{~V}\). When \(\left[\mathrm{M}^{2+}\right]\) is \(1.0 \times 10^{-3} \mathrm{M}\) and \(\mathrm{p}\left(\mathrm{O}_2\right)\) is 0.1 atm , the EMF of the cell becomes +1.57 V . Calculate the pH of the electrochemical cell.COMEDK 2025 Medium
- Pick out the unsaturated fatty acid from the followingCOMEDK 2016 Medium
- Identify the wrong statement from the followingCOMEDK 2026 Medium
- The hybridisation of atomic orbitals of nitrogen in \(\text{NO}_2^+\), \(\text{NO}_3^-\) and \(\text{NH}_4^+\) are respectivelyCOMEDK 2026 Medium
- Given that the standard enthalpy of combustion of \(\mathrm{C}_{(\mathrm{S})}\) and \(\mathrm{CS}_2(\mathrm{l})\) are -393.3 and \(-1108.76 \mathrm{~kJ} / \mathrm{mol}\) respectively and the standard enthalpy of formation of \(\mathrm{CS}_2\) is \(128.02 \mathrm{~kJ} / \mathrm{mol}\). What is \(\Delta H_f^0\) of \(\mathrm{SO}_2\) ?COMEDK 2025 Medium
- A non-volatile solute A weighing 60 g when dissolved in 212 g of the solvent Xylene reduces its vapour pressure to \(60 \%\). What is the Molar mass of A in \(\mathrm{g} / \mathrm{mol}\) ? [MM of xylene \(=106 \mathrm{~g} / \mathrm{mol}\) ]COMEDK 2025 Medium
More PYQs from COMEDK
- In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below.
Assertion (A): A molecule of \(\mathrm{SF}_4\) is see-saw shaped, while that of \(\mathrm{CIF}_3\) is T-shaped.
Reason(R): SF\(_4\) has two lone pair of electrons. But CIF\(_3\) has one pair of electrons.COMEDK 2024 Medium - The co-axial system of circles given by \(x^{2}+y^{2}+2 g x+c=0\) for \(c < 0\) representsCOMEDK 2013 Hard
- A silicon sample is doped simultaneously with donor impurity phosphorus at a concentration of \(N_D = 3 \times 10^{22}\ m^{-3}\) and acceptor impurity boron at a concentration of \(N_D = 2.8 \times 10^{22}\ m^{-3}\). The intrinsic carrier concentration of silicon at room temperature is \(n_i = 1.5 \times 10^{16}\ m^{-3}\). Assuming complete ionization, the hole concentration is:
A. \(1.125 \times 10^{10}\ m^{-3}\)
B. \(1.125 \times 10^{11}\ m^{-3}\)
C. \(2.125 \times 10^{10}\ m^{-3}\)
D. \(2.125 \times 10^{11}\ m^{-3}\)COMEDK 2026 Medium - If \(x=A \cos 4 t+B \sin 4 t\), then \(\frac{d^{2} x}{d t^{2}}\) is equal toCOMEDK 2013 Easy
- \(\int_\limits{-1}^1 \dfrac{d}{d x}\left(\tan ^{-1} \dfrac{1}{x}\right) d x \text { is }\)COMEDK 2024 Medium
- In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below.
Assertion (A): van't Hoff factor for a solution of benzoic acid in benzene is less than one.
Reason(R): Benzoic acid undergoes dissociation in benzene and its calculated molecular mass using colligative properties is lower than its actual molecular mass.COMEDK 2024 Medium