Class 12th

Redox reactions is the basic principle of the electrochemistry. The redox reactions is the process where electrons are transferred between substances. In this process chemical energy gets converted into electrical energy and vice versa.

In simple words, the study of relationship between electrical energy and chemical reactions is called the Electrochemistry. The concept comprises how chemical reactions can create electrical energy and how electrical energy can generate chemical changes.

Haemoglobin is a positive colloid. Hence greater is the charge of anion, more effective will be the coagulation of haemoglobin.

Therefore,

Correct order of coagulating power is

Electrophoresis : The migration of colloidal particles under the influence of an electric field is known as electrophoresis.

For a first order reaction.

   = 3*10^-3 S-1

If a solution containing more than 0.9% salt is used, and we place blood cells in it, the water will flow out of the cells, and they will shrink. Such a solution is a hypertonic solution.

Similarly, if a solution contains less than 0.9% salt, the water will flow into the cells, and they will enlarge. 

When more solute can be dissolved in a solution at a constant temperature, it is an unsaturated solution.

When no more solute can be dissolved in a solution at a constant temperature and pressure, it is called a saturated solution.