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  • Give reasons for the following : (a) Leather gets hardened after tanning. (b) is preferred over <img alt="KCl" src="https://entrance

Give reasons for the following :

(a) Leather gets hardened after tanning.

(b) FeCl_{3} is preferred over KCl in case of a cut leading to bleeding.

(c) Freundlich isotherm becomes independent of pressure at high pressure for a gas absorbed on a solid.

 

 

 

 
 
 
 
 

Answers (1)

(a) Leather gets hardened after tannings because animal is collidal and has positively charged particles, whereas forming has negatively charged particles, resulting in mutual coagulation, when they are mixed, which hardens the rather.

(b) FeCl_{3} is preferred over KCl in case of a out reading to bleeding as Fe in +3 oxidation state , whereas K is in +1, higher the valency better is the coagulation efficiency of compound.

(c) Freundlich adsorption isotherm becomes independent of pressure at high pressure for a gas absorbed on solid, because at high pressure, the curves approch saturation, i.e, more pressure will not increase the number of particles absorbed.

Posted by

Sumit Saini

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