CBSE > Class 12 > Chemistry | CBSE Board | Homework Help

Chemical kinetics, also known as reaction kinetics, is the branch of physical chemistry that is concerned with understanding the rates of chemical reactions. It is to be contrasted with chemical thermodynamics, which deals with the direction in which a reaction occurs but in itself tells nothing about its rate.

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Explain osmosis and osmotic pressure

Posted by Eni Gidwani 3 years ago

CBSE > Class 12 > Chemistry

2 answers

The Thakur Shahab 2 years, 11 months ago

The process in which solvent move towards solution particle through semi permiable membrane is called osmosis The external hydronic pressure exert to solution side which just stop the osmosis is called osmotic pressure

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Sachin Sharma 3 years ago

The movement of solute molecules from higher concentration to lower called osmosis The pressure that has to applied to stop movement of molecules . Yet when it is too greater than Reverse osmosis occurs (R.O.)

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Chapter 8 exercises

Posted by Lalit Attri 3 years ago

CBSE > Class 12 > Chemistry

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Find the solution of which salt at 293 Kelvin which salt has the highest solubility at this temperature

Posted by Arush Kumar 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Preeti Dabral 2 years, 9 months ago

Ammonium chloride will have the highest solubility at 293 K temperature.
Given,
Temperature= 293 K.
To find:
The salt with the highest solubility.
Solution:
Let us take the following salts and assume we are mixing them in 100g of water at 293 K.

1. Potassium Nitrate.

2. Sodium Chloride.

3. Potassium Chloride.

4. Ammonium Chloride.

The solubility of the above-mentioned salts is as follows:

1. Potassium Nitrate = 32

2. Sodium Chloride = 36

3. Potassium Chloride = 35

4. Ammonium Chloride = 37

As we can see Ammonium Chloride has the highest solubility (37), hence it will dissolve the most in 100 g of water.

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What is the coordination number of sodium in na2o?

Posted by Jeevansh Sharma 3 years ago

CBSE > Class 12 > Chemistry

2 answers

Rahul Ravi 2 years, 11 months ago

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Sakshi . 3 years ago

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Define the term solution.how many types of solutions

Posted by Mohd Asjad 3 years ago

CBSE > Class 12 > Chemistry

3 answers

Saloni Taank 3 years ago

Solutions are homogeneous mixture of two or more or more than two substance

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Sakshi . 3 years ago

Solutions are homogenous mixture of two or more than two components. They are of two types : (i) Ideal solutions (ii) Non ideal solutions

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Pravesh Sharma 3 years ago

The mixture of solute and solvent is call solution

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isotonic solutions are the solution having same

Posted by Ekta Saharan 3 years ago

CBSE > Class 12 > Chemistry

1 answers

Ashi Karaiya 3 years ago

Osmotic pressure at a given temperature

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What is Daniel cell

Posted by Naved Khan 3 years ago

CBSE > Class 12 > Chemistry

1 answers

Priyanka Tiwari 3 years ago

A cell have electrodes of cu(cathode) and zinc(anode) N convert chemical energy into electric energy means it's an example of galvanic cell

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Madam what is the name of structure of ch³ch²NCh²ch³

Posted by Anshu Sheikhpurya 3 years ago

CBSE > Class 12 > Chemistry

1 answers

Priyanka Tiwari 3 years ago

N-ethylethanamine

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How can I write a report for primary batteries

Posted by Kavitha Kavitha 3 years ago

CBSE > Class 12 > Chemistry

1 answers

Sakshi . 3 years ago

Primary batteries are those in which the redox reaction occurs only once and the cell becomes dead after sometime and cannot be used again. E.g. : Dry cell & mercury cell

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Chemical properties of phenol

Posted by Alshiba Khan 3 years ago

CBSE > Class 12 > Chemistry

1 answers

Anu Anu 3 years ago

~chemical properties of phenol are electrophilic substitution reactions, halogenation reactions,kolbe's reactions, Reiner-teimann reactions, reactions with zinc dust, and oxidation of phenol

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Resonating structure of aldehyde

Posted by Shivani Sharma 3 years ago

CBSE > Class 12 > Chemistry

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Express the rate of reaction 2N2O5- 2N2O4+O2 1) concentration change of N2O5 2) concentration change of O2

Posted by Sumni Rangi 3 years ago

CBSE > Class 12 > Chemistry

0 answers

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What is steric hinderence?

Posted by Mm - Hrittik 3 years ago

CBSE > Class 12 > Chemistry

1 answers

Ayush .. 3 years ago

Slowing of chemical reaction due to steric bulk

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The half life period of the first order reaction is 10s-1 calculate its rate constants

Posted by Ravi Sharma 3 years ago

CBSE > Class 12 > Chemistry

2 answers

Anu Anu 3 years ago

K=6.93

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Aman Sharma 3 years ago

K=0.693/t1/2 t1/2=10 K=0.693/10 K=0.0693 K=6.93×10^-2. (ANS)

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All conversion of haloalkanes and haloarenes

Posted by Upasna Mattu 3 years ago

CBSE > Class 12 > Chemistry

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Why Mn2+n more stable than Fe2+ toward the +$ oxidation state why

Posted by Harshit Shukla 3 years ago

CBSE > Class 12 > Chemistry

3 answers

Kishor Bhogam 3 years ago

Hello

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Aman Sharma 3 years ago

IN Mn2+ Electronic config.=3d5 4s0 (half filled orbital stability) In Fe2+ Electronic confi.= 3d6 4s0 (not stable more than half stability ) Half filled , full filled , vancant orbitals are known to be stable so therefore, Mn2+ is more stable than Fe2+

1Thank You

Akshat Marwadi 3 years ago

As Fe has less electrode potential then mn that's why mn2+ is more stable then fe

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Calculate the amount of nahi in200g 10%naoh solution

Posted by Arshad Khan 3 years ago

CBSE > Class 12 > Chemistry

2 answers

Nitesh B 3 years ago

20 %

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Ayush Gupta 3 years ago

Gu khao

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In organic reaction

Posted by Chote 3 years ago

CBSE > Class 12 > Chemistry

1 answers

Akshay Haldua 3 years ago

Which one name send me

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Haloalkanes and haloarenes notes

Posted by Swati Pandey 3 years ago

CBSE > Class 12 > Chemistry

1 answers

Akshay Haldua 3 years ago

Yes

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How to find iupac name

Posted by Goperundevi R 3 years ago

CBSE > Class 12 > Chemistry

2 answers

Priyanka Tiwari 3 years ago

Prefix (for substituents)+ wordroot (for carbon chain)+ suffix ( for functional groups) thats it

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Shubham Gupta 3 years ago

Firstly find the longest chain Then count carbon from the side ehreei functional group is attached

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What is cross andol condensation

Posted by Shalini Singh Singh 3 years ago

CBSE > Class 12 > Chemistry

2 answers

Ujala Pandey 3 years ago

When aldol condensation is carried out between aldehyde or ketone is known as cross adol condensation

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Anjan Karthi 3 years ago

Cross aldol condensation is a kind of α - hydrogen driven reaction wherein an aldehyde and a ketone, with atleast one having α - hydrogen atoms, is treated with dilute alkaline medium to produce cross aldols (ie, either Β - hydroxy aldehyde or Β - hydroxy ketones.

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Osmosis and its factor

Posted by Piyush Saw 3 years ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 3 years ago

Osmosis can be defined as the movement of solvent molecules in a solution from a region of it's higher concentration to a region of it's lower concentration across a semipermeable membrane. It depends mainly on 3 factors :- (i) The concentration of the solution. (ii) Temperature at which it occurs. (iii) Degree of dissociation or association of the solute (if possible).

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