Question

Please answer my question

Answer 1

I am not sure but see if it is right or not...

Answer:

(1) process of hardening of leather is known as tanning. Tannin which is obtained from a mixture of polyhydroxy benzoic acids and contains negatively charged particles. Animal skin is colloidal in nature and has positively charged particles. When they are soaked in tannin, their mutual coagulation takes place and thus leather becomes hard after tanning.

(2) Greater the charge on flocculating ion and smaller is the amount of electrolyte required for precipitation, higher is the coagulating power of the coagulating ion (Hardy Schulze Law). Phosphate ion bear 3 charge while chloride ion carries only 1 charge and due to the higher charge, the coagulating power of phosphate is higher than chloride.

(3) The optimum temperature range for enzymatic activity is 298-310 K, i.e. the enzymes are inactive beyond this temperature range(high or low). Thus during fever (temperature>310 K), the activity of enzymes get affected. Hence the vital functions of the body such as digestion gets affected during fever.