Surface Chemistry
(iv) Surface area of adsorbent: The extent of adsorption increases with the increase of surface area of the adsorbent. Thus, finely divided metals and porous substances having large surface areas are good adsorbents. (v) Enthalpy of adsorption: No doubt, physical adsorption is an exothermic process but its enthalpy of adsorption is quite low (20–
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www.ncert.nic.in317 Alcohols, Phenols and Ethers Allylic and benzylic alcohols may be primary, secondary or tertiary. (ii) Compounds containing C OHsp2 − bond: These alcohols contain —OH group bonded to a carbon-carbon double bond i.e., to a
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