Chemistry - Surface Chemistry Question with Solution | TestHub
Identify correct statements-
(i) If on adding electrolyte in an emulsion the conductivity increases significantly, then it will be oil in water type emulsion.
(ii) Formation of miscelles take place only above a particular temperature called Kraft temperature.
(iii) Zeolites are widely used in petrochemical industries for cracking of hydrocarbon and isomerisation.
(iv) In the process of tanning, mutual coagulation takes place.
Options:
Answer:
Solution:
All statements (i), (ii), (iii), and (iv) are correct.
(i) Oil-in-water emulsions have water as the continuous phase, which is a good conductor. Adding an electrolyte increases its conductivity.
(ii) Micelle formation occurs above the critical micelle concentration (CMC) and Kraft temperature ().
(iii) Zeolites are shape-selective catalysts used in petrochemicals for cracking and isomerization.
(iv) Tanning involves the mutual coagulation of positively charged hide proteins and negatively charged tanning agents.