EPISODES:
Board Exams Class10: Biology Important Questions/Notes:Topic- Management of Natural Resources (2) Board Exams Class10: Biology Important Questions (Part-8):Topic-Management of Natural Resources Board Exams Class10: Biology Important Questions / Notes: Topic- Management of Natural Resources (3) Best Tips / Basic Facts #Chemistry For Classes 10,11 & 12 By Sanjit Sir Heredity Evolution Biology Class 10 Board Exam Important Questions by Dr. Sanjit Sir (Part 1) Heredity Evolution Class 10 Board Exam Questions CBSE/NTSE Biology (Part 2) By Dr Sanjit Sir Heredity Evolution Biology Class 10 Board Exam Important Questions CBSE/NTSE (Part 3) By Sanjit Sir Part (1) Heredity Evolution Biology Class 10 Board Exam Important Questions CBSE/NTSE Board (Part 5) By Dr Sanjit Phogat Sir Heredity Evolution Biology Class 10 Board Exam Important Questions CBSE/NTSE Board (Part 4) By Dr. Sanjit Sir Heredity & Evolution Biology Board Exam Important Questions Class 10 CBSE/NTSE Board (Part 6) By Sanjit Sir Heredity & Evolution Biology Board Exam Important Questions Class 10 CBSE/NTSE Board (Part 7) , By Sanjit Sir Board Exams Class10: Biology Important Questions / Notes: Topic- How Do Organisms Reproduce? (1) Board Exams Class10: Biology Important Questions / Notes: Topic- How Do Organisms Reproduce? (2) Board Exams Class10: Biology Important Questions / Notes: Topic- How Do Organisms Reproduce? (3) Board Exams Class10: Biology Important Questions / Notes: Topic- How Do Organisms Reproduce? (4) Board Exams Class10: Biology Important Questions / Notes: Topic- How Do Organisms Reproduce? (5) Board Exams Class10: Physics Important Tips / Notes: Topic- Magnetic Effect Of Current (3) Board Exams Class10: Physics Important Questions / Notes: Topic- Magnetic Effect of Current (1) Board Exams Class10: Physics Important Questions / Notes: Topic- Magnetic Effect of Current (2) Board Exams Class10: Physics Important Questions / Notes: Topic- Magnetic Effect of Current (4) Magnetic Effects of Current (5) – Board Express Class 10 | Electric/ DC Motors – by Sanjit Sir Magnetic Effects of Current (6) – Board Express Class 10 | Generator, Electromagnetic Induction Board Exams Class10: Physics Important Questions / Notes: Magnetic Effect of Current (7) Board Exams Class10: Physics Important Questions / Notes / Tips / Topics: Light Reflection (1) Board Exams Class10: Physics Important Questions / Notes / Tips / Topics: Electricity (1) Board Exams Class10: Physics Important Questions / Notes / Tips / Topics: Electricity (2) Board Exams Class10: Physics Important Questions / Notes / Tips / Topics: Electricity (3) Board Exams Class10: Physics Important Questions / Notes / Tips / Topics: Electricity (5) Board Exams Class10: Physics Important Questions / Notes / Tips / Topics: Electricity (6) Board Exams Class10: Physics Important Questions / Notes / Tips / Topics: Electricity (7) Board Exams Class10: Chemistry Important Questions / Notes / Tips / Topics: Metals & Non Metals (1) Board Exams Class10: Chemistry Important Questions / Notes / Tips / Topics: Metals & Non Metals (2) Board Exams Class10: Chemistry Important Questions / Notes / Tips / Topics: Metals & Non Metals (4) Board Exams Class10: Chemistry Important Questions / Notes / Tips / Topics: Metals & Non Metals (3) Board Exams Class10: Chemistry Important Questions / Notes / Tips: Metals and Non Metals (5) How to Score 100 Marks in Board Exam. Important Tips & Advice by Sanjit Sir Board Exams Class10: Chemistry Important Questions / Notes / Tips: Metals and Non Metals (6) Board Exams Class10: Chemistry Important Questions / Notes / Tips: Metals and Non Metals (7) Board Exams Class10: Chemistry Important Questions / Notes / Tips: Metals and Non Metals (8) Board Exams Class10: Chemistry Important Questions / Notes / Tips: Metals and Non Metals (9) Board Exams Class10: Chemistry Important Questions / Notes / Tips: Metals and Non Metals (10) Best of Luck from Sanjit Sir for Class 10th & 12th Board Examinations

3 minutes solid tips on D&F Block – Colour of Ions by Sanjit Sir #Chemistry Board Exam Questions

In this video

Rating
This is must-watch lesson for board exam preperations
4.6
User Rating

3 minutes solid tips on D&F Block – Colour of Ions by Sanjit Sir for Science #Chemistry Board Exam Easy way to remember Colour of Ions and prepare for board exam.

Dr. Sanjit Phogat, Professor

For Any query: sanjitphogat@gmail.com

Visit our facebook: https://www.facebook.com/FreeVideosBoardExamImportantQustionTips

Topics Covered:

IV, Chemical Kinetics. V, Surface Chemistry. VI, Isolation of Elements, 19. VII, p-Block Elements. VIII, d- and f-Block Elements. IX, Coordination Compounds. X, Haloalkanes and Haloarenes, 28. XI, Alcohols, Phenols and Ethers. XII, Aldehydes, Ketones and Carboxylic Acids. XIII, Organic Compounds containing Nitrogen.You can only do this if you know the mechanism of a reaction. If something is an elementary step, then you can get the order by inspection. For example, the reaction:
A + B + C D

is not necessary first order in each component for an overall reaction order of three (i.e. rate = k[A][B][C]). We need to consider the reaction mechanism.

If A and B react slowly to form an unobserved intermediate, I, which then quickly reacts with C to give our product, then the concentration of C doesn’t affect the rate (i.e. the reaction of A + B is the rate-limiting step).

A + B I (slow)

I + C D (fast)

The bottleneck in the production of D (the rate limiting step) is the reaction of A + B! As soon as I is formed, it reacts with C to make D very quickly as long as we have some amount of C present. If we explored this experimentally, we’d find that if we held [A] and [B] constant, the rate would be the same regardless of the [C].

A Real World(tm) analogy here. To get a new car we have to work, save and spend $$. Our first step is working (A) and saving (B) to get the money we need (I). In fact, we can’t even do the second step of the reaction, writing a check to the dealer (C) even though this takes very little time. Clearly, it is not the transaction itself that determines how soon we car, it is the first step, working and saving.

Now that we have a series of elementary steps, we can determine the reaction order. In the first step A and B react (again, an elementary step of our reaction), so our rate = k[A][B], a second order reaction. The total reaction is also second order overall because the second step of our mechanism has no effect on the rate (consider it to be instantaneous if you wish).

Intermediates can’t appear in your overall rate law.

Intermediates are defined as species that appear in the mechanism of a reaction, but not in the overall balanced equation. Let’s write out a mechanism and then add up the products and reactants to come up with the overall balanced reaction:
NO(g) + N2O(g) N2(g) + NO2(g)

2 NO2(g) 2 NO(g) + O2(g)

If we multiply the first equation by two and then add up the products and reactants, we’d see that NO2 is present in equal amounts on both sides and cancels from our final balanced equation. NO2 is therefore an intermediate

2 NO(g) + 2 N2O(g) + 2 NO2(g) 2 N2(g) + 2 NO2(g) + 2 NO(g) + O2(g)

So our net reaction is:

2 NO(g) + 2 N2O(g) 2 N2(g) + 2 NO(g) + O2(g)

Obviously, we can not explain the observed rate with respect to the concentration of an unobserved species!

Finally, note that NO is a catalyst in this reaction — it is not consumed in the reaction and is present both at the beginning and end!

(Visited 105 times, 1 visits today)

You might be interested in

Playlists Have This Video

LEAVE YOUR COMMENT

Your email address will not be published. Required fields are marked *