COMEDK · Chemistry · 19. Chemical Kinetics
\(a P+b Q \longrightarrow\) products, when \([P]\) is doubled keeping \([Q]\) constant and rate increases 2 times, when \([P]\) is constant and \([Q]\) is doubled and rate increases four times. The overall order is
- A 1
- B 2
- C 3
- D \(2.5\)
Answer & Solution
Correct Answer
(C) 3
Step-by-step Solution
Detailed explanation
For a reaction, \(a P+b Q \rightarrow\) Products \(r=k[P]^{a}[Q]^{b} \quad \text{...(i)}\) \(2 r=k[2 P]^{a}[Q]^{b} \quad \text{...(ii)}\) \(4 r=k[P]^{a}[2 Q]^{b} \quad \text{...(iii)}\) On dividing Eqs. (ii) by (i), we get \[ 2=2^{a} \Rightarrow a=1 \] On dividing Eqs. (iii) by…
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
- Identify the final product formed when Toluene undergoes a series of reactions with reagents given in the order:
(i) \(\mathrm{Cl}_2\) / Sunlight
(ii) \(\mathrm{H}_2 \mathrm{O} / 373 \mathrm{~K}\)
(iii) Acetophenone / \(\mathrm{OH^-}\) at \(293 \mathrm{~K}\)COMEDK 2024 Medium - \(A+B \rightleftharpoons C+D\)
The initial concentrations of \(A\) and \(B\) are equal. At equilibrium, the concentration of \(C\) is twice that of \(A\). The equilibrium constant of the reaction isCOMEDK 2012 Hard - \(5\text{ g}\) of a non-volatile, water-soluble compound \(X\) is dissolved in \(100\text{ g}\) of water (\(K_b = 0.52\text{ K kg mol}^{-1}\)). The elevation in boiling point is found to be \(1.3\text{ K}\). The molar mass of compound \(X\) is:COMEDK 2023 Medium
- In Lassaigne's test for nitrogen in an organic compound, the blue colouration is due to the formation ofCOMEDK 2012 Medium
- Nuclear theory of the atom was put forward byCOMEDK 2016 Easy
- Identify the correct mathematical expression which represents the variation in molar conductivity of a weak acid having concentration C and ionisation constant \(K_a\)
(\(\lambda_m^\infty\) = molar conductivity at infinite dilution, \(\lambda_m\) = molar conductivity at concentration C)COMEDK 2026 Medium
More PYQs from COMEDK
- A rectangular loop of resistance \(R=5 \Omega\) is placed in a uniform magnetic field such that the magnetic flux through the loop increases according to the relation \(\phi=4 t^2-2 t\) where \(\phi\) is in weber and \(t\) is in second. The current induced at \(t=3\) second is:COMEDK 2025 Medium
- The differential equation of all the \(2-d\) lines areCOMEDK 2024 Easy
- Carnot heat engine takes \(300 \mathrm{~J}\) of heat from a source at \(627^{\circ} \mathrm{C}\) and gives some part of it to \(\operatorname{sink}\) at \(27^{\circ} \mathrm{C}\). Work done by engine in one cycle isCOMEDK 2016 Easy
- For motion under central forces, which quantity will be conserved ?COMEDK 2021 Easy
- An unknown resistance \(R_{1}\) is connected in series with a resistance of \(10 \Omega\). This combination is connected to one gap of a meter bridge, while a resistance \(R_{2}\) is connected in the other gap. The balance point is at \(50 \mathrm{~cm}\). Now, when the \(10 \Omega\) resistance is removed the balance point shifts to \(40 \mathrm{~cm}\). The value of \(R_{1}\) (in ohm) isCOMEDK 2019 Medium
- Which of the following is an intensive property?COMEDK 2020 Medium