JEE Main levelSingle correct optionDifficulty 2 of 3g2078
Sodium hydride is added to dry ethanol. The main change is
Ahydride acts as a nucleophile at carbon to give ethane
Bno reaction occurs because hydride is a very weak base
Chydride acts as a base, removing the proton to give sodium ethoxide and hydrogen gas
Dhydride reduces the O-H bond to give ethane and water
Answer: C
HX− is a very strong base (pKa of HX2 about 35) and ethanol is a much stronger acid (pKa 15.9). Proton transfer occurs: CHX3CHX2OH+NaHCHX3CHX2ONa+HX2, evolving hydrogen.