Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Kapri Sub 6 years, 8 months ago
- 3 answers
Posted by Harshita Choudhary 6 years, 8 months ago
- 0 answers
Posted by Riya Sinha 6 years, 8 months ago
- 1 answers
Aman Kumar 6 years, 8 months ago
Posted by Sandy Crush 6 years, 8 months ago
- 0 answers
Posted by Krutika Guru 6 years, 8 months ago
- 0 answers
Posted by Tej Bahadur Yadav 6 years, 8 months ago
- 1 answers
Harsh Mishra 6 years, 8 months ago
Posted by Armaan Sandhey 6 years, 8 months ago
- 0 answers
Posted by Harpal Singh 6 years, 8 months ago
- 0 answers
Posted by Ritesh Kumar 6 years, 8 months ago
- 3 answers
Yogita Ingle 6 years, 8 months ago
Vapour pressure can be defined as pressure formed by the vapor of the liquid (or solid) over the surface of the liquid. This pressure is formed in a thermodynamic equilibrium state in a closed container at a certain temperature. Liquid’s evaporation rate is identified by the equilibrium vapor pressure. Vapour pressure increases with the temperature. The boiling point of the liquid is the point when the pressure exerted by surrounding equals to the pressure exerted by vapor.
Pragati Gola 6 years, 8 months ago
Posted by Mahak Agrawal 6 years, 8 months ago
- 1 answers
Mahak Agrawal 6 years, 8 months ago
Posted by Kusum Yadav 6 years, 8 months ago
- 1 answers
Posted by Shashikant Yadav 6 years, 8 months ago
- 0 answers
Posted by Jyoti Saroj 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
An electric conductor through which an electric current enters or leaves an electrolytic cell or other medium is called an electrode.
The difference in the potential of the electrodes of the cell when no current is flowing is known as cell potential or EMF (electromotive force) of the cell.It is represented by the symbol E.
Posted by Jyoti Saroj 6 years, 8 months ago
- 2 answers
Yogita Ingle 6 years, 8 months ago
The potential difference between the two electrodes of a galvanic cell is called the cell potential and is measured in volts. The cell potential is the difference between the electrode potentials (reduction potentials) of the cathode and anode. It is called the cell electromotive force (emf) of the cell when no current is drawn through the cell.
The cell potential depends on many factors, including the nature of the oxidizing and reducing agents, the concentrations of the salt solutions in the half-cells, the temperature of the solutions, and the atmospheric pressure.
Astha Dewangan 6 years, 8 months ago
Posted by Yash Vashistha 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
- Increase in temperature increases the vapour pressure of a liquid boils at atemperature where the vapour pressure is equal to the atmospheric vapour pressure of the solvent decreases in the presence of non-volatile solute.
- The boiling point of a solution is always higher than that of the boiling point of the pure solvent in which thesolution is prepared as the elevation of boiling point also depends on the number of solute molecules rather than their nature.
- The increase in the boiling point = ΔTb = Tb – Tb0. This is known as elevation of boiling point.
Tb0 = boiling point of pure solvent
Tb0 = boiling point of solution
Posted by Dead Ney 6 years, 8 months ago
- 1 answers
Pragati Gola 6 years, 8 months ago
Posted by Priyanka Priya 6 years, 8 months ago
- 0 answers
Posted by Muskan Sharma 6 years, 8 months ago
- 1 answers
Vidushi Shukla 6 years, 8 months ago
Posted by Suraj Kumar 6 years, 8 months ago
- 0 answers
Posted by Ravi Kumar 6 years, 8 months ago
- 0 answers
Posted by Ansh Yadav 6 years, 8 months ago
- 1 answers
Gaurav Seth 6 years, 8 months ago
A molecule is said to be polar if it posses nonzero dipole moment (electronegativity difference and without symmetry).
| Polar molecules | Non-polar molecules |
| 1.Molecules in which dipole moment is not ‘zero’ are called polar solvents. Example: NaCl, HF, H2O…etc They does not posses any symmetry. | 1.Molecules in which dipole moment is ‘zero’ are called non-polar solvents.Example: CCl4, H2, Cl2, O2…etc These compounds may posses symmetry. |
| 2.The non-zero dipole moment in these molecules is mainly due to electronegativity difference between bonding atoms. | 2.In non-polar molecules the dipole moment is zero due nearly equal in electronegativity of bonding atoms and also due to symmetry in structure. |
| 3.Generally polar molecules dissolve in polar solvents.Ex: NaCl will dissolve in H₂O | 3.Generally non polar molecules dissolve in non-polar solvents.Ex: CCl₄ will dissolve in Benzene |
Posted by Mahak Agrawal 6 years, 8 months ago
- 1 answers
Abdul Majid 6 years, 8 months ago
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Kapri Sub 6 years, 8 months ago
0Thank You