Forgot Your Password?
Create Your FREE Account
Would you like to Register using Facebook? You will get News and Announcements directly in your Facebook.
Register Without Facebook
E Learning

Expert Notes

  • Special Notes Prepared for GPAT/NIPER-JEE Exams.
  • Prepared Exclusively by GPATOnline Experts Team.
  • Detailed and Specific Solution.
  • Available Online and Printed Format
Online Test

Online Test

  • Pre configured test sets for GPAT 2013.
  • Get instant result.
  • Auto analyzer tool.
  • Unlimits tests.
E Learning

e Learning

  • Online learning solution - any time, any where.
  • Targeted on learning system.
  • Hints for complex questions.
  • View question and answer format.
Expert Advice

Expert Advice

  • Do you have any douts ?
  • Need assistance ?
  • Ask your questions to our experts.
  • A specialised team of industrial and academic experts.
GPAT Online Test Series
  • Free Test4
  • Complete Test64
  • Practice Test20
  • All India GPAT Mock Test1
  • Total Tests89
  • *Tests are suitable for NIPER/GPAT/and other Pharmacy Exams.
Expert Notes
  • Pharmacology and Medicinal Chemistry
  • Pharmaceutics
  • Pharmaceutical Analysis
  • Pharmacognosy
  • Pharmaceutical Jurisprudence
  • Indian Pharmacopoeia
Previous Year Question Papers
  • GPAT - 2012
  • GPAT - 2010
  • GPAT - 2008
  • GPAT - 2005
  • GPAT - 2003
  • GPAT - 2001
  • GPAT - 2000
Recommended Videos: [ View All ]

Disclaimer: The videos listed here for your study recommendations. All copyrights, content, symbols of the videos are associated with the respective owners.
Announcements | News | Alerts
Question of the Day
Concept of the Week

  • Elementary Reactions and Mechanism

    Elementary Reactions and Mechanism:
    Elementary reactions are steps of molecular events showing how reactions proceed. This type of description is a mechanism.

    The mechanism for the reaction between CO and NO2 is proposed to be

    Step 1   NO2 + NO2 –>   NO3 + NO   (an elementary reaction)
    Step 2   NO3 + CO –>   NO2 + CO2   (an elementary reaction)

    Add these two equations led to the overall reaction

    NO2 + CO = NO + CO2     (overall reaction)

    Molecularity of Elementary Reactions:
    The total order of rate law in an elementary reaction is molecularity.
    The rate law of elementary reaction is derived from the equation. The order is the number of reacting molecules because they must collide to react.

    1. A molecule decomposes by itself is a unimolecular reaction (step);
    2. Two molecules collide and react is a bimolecular reaction (step); &
    3. Three molecules collide and react is a termolecular reaction (step).

    O3 –>  O2 + O     rate = k [O3]

    NO2 + NO2 –>   NO3 + NO    rate = k [NO2]2

    Br + Br + Ar –>   Br2 + Ar*    rate = k [Br]2[Ar]

Like us on Facebook
Pharma Events & Conferences