COMEDK · Chemistry · 1. Some Basic Concepts of Chemistry
4 moles each of \(\mathrm{SO}_{2}\) and \(\mathrm{O}_{2}\) gases are allowed to react to form \(\mathrm{SO}_{3}\) in a closed vessel. At equilibrium \(25 \%\) of \(\mathrm{O}_{2}\) is used up. The total number of moles of all the gases present at equilibrium is
- A \(6.5\)
- B \(7.0\)
- C \(8.0\)
- D \(2.0\)
Answer & Solution
Correct Answer
(B) \(7.0\)
Step-by-step Solution
Detailed explanation
\begin{aligned} &\begin{array}{lccc} & 2 \mathrm{SO}_{2}+\mathrm{O}_{2} \rightleftharpoons & 2 \mathrm{SO}_{3} \\ \text { Initially } & 4 \text { moles } & 4 \text { moles } & 0 \\ \text { At equili. } & (4-2) & (4-0.25 \times 4) & 2 \\ & =2 & =3 & \end{array}\\ &\therefore…
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
- Consider the following compounds , \(\mathrm{CH}_3 \mathrm{Cl}(\mathrm{A}), \quad \mathrm{CH}_3 \mathrm{Br}(\mathrm{B}), \quad \mathrm{CH}_2 \mathrm{Br}_2(\mathrm{C}), \quad \mathrm{CHBr}_3(\mathrm{D})\) The correct order of boiling points of the compounds is:COMEDK 2025 Medium
- The concentration and percentage purity of Oxalic acid can be determined by titration with \(\mathrm{KMnO}_4\) in presence of dil. \(\mathrm{H}_2 \mathrm{SO}_4\). Instead of dil. \(\mathrm{H}_2 \mathrm{SO}_4\), dil HCl cannot be used becauseCOMEDK 2025 Medium
- For the reaction \(\mathrm{A}_2+\mathrm{B}_2 \cdots \rightarrow 2 \mathrm{AB}, \Delta \mathrm{H}_{\mathrm{f}}=-400 \mathrm{~kJ} / \mathrm{mol}\). The bond dissociation enthalpies of \(\mathrm{A}_2\), \(\mathrm{B}_2\) and AB are in the ratio \(1: 0.75: 1\). What is the bond dissociation enthalpy of \(\mathrm{B}_2 \mathrm{in} \mathrm{kJ} / \mathrm{mol}\) ?COMEDK 2025 Easy
- \(0.06\) mole of \(\mathrm{KNO}_{3}\) solid is added to \(100 \mathrm{~cm}^{3}\) of water at \(298 \mathrm{~K}\). The enthalpy of \(\mathrm{KNO}_{3}(a q)\) solution is \(35.8 \mathrm{~kJ} \mathrm{~mol}^{-1}\). After the solute is dissolved the temperature of the solution will beCOMEDK 2018 Medium
- Horn silver isCOMEDK 2019 Easy
- A reaction between a carbonyl compound and a Grignard reagent is termed asCOMEDK 2014 Easy
More PYQs from COMEDK
- A triangular park is enclosed on two sides by a fence and on the third side by a straight river bank. The two sides having fence are of same length \(x\). The maximum area enclosed by the park isCOMEDK 2023 Medium
- On treating a mixture of two alkyl halides with sodium metal in dry ether, 2 -methyl propane was obtaine(d) The alkyl halides areCOMEDK 2016 Easy
- A particle is projected at an angle \(30^{\circ}\) with horizontal having kinetic energy \(K\). The kinetic energy of the particle at highest point is.COMEDK 2023 Easy
- A current flows in a conductor from East to West. The direction of the magnetic field at a point above the conductor isCOMEDK 2013 Medium
- The function \(y=\log \omega t\) can representCOMEDK 2021 Easy
- Though \(\mathrm{Sn}\) and \(\mathrm{Si}\) are \(4^{\text {th }}\) group elements, \(\mathrm{Sn}\) is a metal while \(\mathrm{Si}\) is a semiconductor becauseCOMEDK 2024 Medium