Question:
A first order reaction has a specific reaction rate of 10–2 s–1. How much time will it take for 20 g of the reactant to reduce to 5 g?
A first order reaction has a specific reaction rate of 10–2 s–1. How much time will it take for 20 g of the reactant to reduce to 5 g?
Updated On: Apr 14, 2025
- 238.6 second
- 138.6 second
- 346.5 second
- 693.0 second
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
The correct option is (B): 138.6 second.
Was this answer helpful?
0
0
Top Questions on Chemical Kinetics
- The rate of a reaction doubles when the temperature is increased by 10°C. What is the approximate value of the activation energy?
- BITSAT - 2025
- Chemistry
- Chemical Kinetics
- Assertion (A): Molecularity of reaction is determined experimentally. Reason (R): Molecularity is applicable only for an elementary reaction and not for a complex reaction.
- CBSE CLASS XII - 2025
- Chemistry
- Chemical Kinetics
- In the Arrhenius equation \( k = Ae^{-E_a/RT} \), ‘A’ represents:
- CBSE CLASS XII - 2025
- Chemistry
- Chemical Kinetics
- The value of rate constant for a pseudo first order reaction:
- CBSE CLASS XII - 2025
- Chemistry
- Chemical Kinetics
The rate of a reaction:
A + B −→ product
is given below as a function of different initial concentrations of A and B.Experiment \([A]\) (mol L\(^{-1}\)) \([B]\) (mol L\(^{-1}\)) Initial Rate (mol L\(^{-1}\) min\(^{-1}\)) 1 0.01 0.01 \(5 \times 10^{-3}\) 2 0.02 0.01 \(1 \times 10^{-2}\) 3 0.01 0.02 \(5 \times 10^{-3}\) - CBSE CLASS XII - 2025
- Chemistry
- Chemical Kinetics
View More Questions
Questions Asked in NEET exam
- Consider the diameter of a spherical object being measured with the help of a Vernier Callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.) are equal to its 9 Main Scale Divisions (M.S.D.). The least count in the M.S. is 0.1 cm and the zero of V.S. is at -0.1 cm when the jaws of Vernier callipers are closed. If the main scale reading for the diameter is \(M = 5\) cm and the number of coinciding vernier division is 8, the measured diameter after zero error correction, is:
- NEET (UG) - 2025
- Measurement of length
- A photon and an electron (mass \(m\)) have the same energy \(E\). The ratio \( \frac{\lambda_{\text{photon}}}{\lambda_{\text{electron}}} \) of their de Broglie wavelengths is: (\(c\) is the speed of light)
- NEET (UG) - 2025
- Dual nature of radiation and matter
A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :
- NEET (UG) - 2025
- Pendulums
- De-Broglie wavelength of an electron orbiting in the \(n = 2\) state of hydrogen atom is close to (Given Bohr radius = 0.052 nm):
- NEET (UG) - 2025
- de broglie hypothesis
- The plates of a parallel plate capacitor are separated by d. Two slabs of different dielectric constant \(K_1\) and \(K_2\) with thickness \(d/2\) and \(d/2\) respectively are inserted in the capacitor. Due to this, the capacitance becomes two times larger than when there is nothing between the plates. If \(K_1 = 1.25 K_2\), the value of \(K_2\) is :
- NEET (UG) - 2025
- Capacitors and Capacitance
View More Questions