CBSE Class 12-science Answered
Wat are the factors affecting the rate of a reaction?
Asked by devna | 11 Jan, 2012, 11:57: AM
Expert Answer
The factors that affect reaction rates are:
- Nature of the reactant- Properties of substances affect reaction rates. Some of the properties are state of matter, molecular size, bond type and bond strength.
- Concentration or pressure of the reactants- Greater the concentration of the reactants, faster is the reaction. Conversely, as the concentrations of the reactants decrease, the rate of reaction also decreases. Increasing the pressure of a gas is exactly the same as increasing its concentration.
- Temperature- The rate of reaction increases with increase of temperature.
- Presence/absence of a catalyst- A catalyst increases the speed of a reaction and helps to attain the equilibrium quickly without disturbing the state of equilibrium.
- Surface area of the reactants- For a reaction involving a solid reactant, increasing the surface area of the solid-phase reactant increases the number of collisions per second and therefore increases the reaction rate.
Answered by | 11 Jan, 2012, 03:56: PM
Concept Videos
CBSE 12-science - Chemistry
Asked by bhadauriyax | 30 Nov, 2023, 06:23: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by rahulbiswal946 | 08 Nov, 2023, 07:01: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by mishraridhi2020 | 23 Jun, 2022, 09:16: AM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by cjam41665 | 10 Oct, 2021, 12:56: AM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by arshbhatia0809 | 22 Jul, 2021, 09:47: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by amitkumar.cis | 14 Jan, 2021, 12:40: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by Surendersingh0493 | 18 Oct, 2020, 02:05: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by khandarev3580 | 10 Oct, 2020, 10:54: AM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by rchaitra1204 | 07 Sep, 2020, 09:43: AM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by dr.akanksha0411 | 07 Aug, 2020, 11:56: AM
ANSWERED BY EXPERT