Write down the equations of the following interaction reactions: a) methanol with metallic sodium;

Write down the equations of the following interaction reactions: a) methanol with metallic sodium; b) ethylene glycol with hydrogen chloride; c) propanol-1 with ethanol in the presence of concentrated sulfuric acid.

Explanation of the solution:
a) the interaction of methanol with sodium to form sodium methoxide and hydrogen;
b) the interaction of ethylene glycol with two molecules of hydrogen chloride, as a result of which two hydroxo groups are replaced by chlorine and 1,2-dichloroethane and two water molecules are formed;
c) dehydration with obtaining a simple ether by the interaction of propanol-1 and ethanol (propylethyl ether and water are formed).