LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
in Chemistry by (20 points)

For reaction

I) H+ Br2  --> 2HBr

II) in presence of sunlight

   H+ Cl2 --> 2HCl

Plz..Explain ur answer?

Please log in or register to answer this question.

1 Answer

0 votes
by (5.0k points)

In a first-order reaction, the reaction rate is directly proportional to the concentration of one of the reactants. 

First-order reactions often have the general form A → products.

 i) H2 + Br2  --> 2HBr 

It comes under a second-order reaction. 

A second-order reaction is a type of chemical reaction that depends on the concentrations of a one-second order reactant or two first-order reactants. This reaction proceeds at a rate proportional to the square of the concentration of one reactant, or the product of the concentrations of two reactants. 

II) in the presence of sunlight  

H2  +  Cl2  --> 2HCl 

It comes under zero-order reaction. 

The zero-order reaction is a chemical reaction wherein the rate does not vary with the increase or decrease in the concentration of the reactants.

No related questions found

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.