Question

1. How many grams of ethylene glycol C2H4(OH)2 are needed perkilogram of water to protect radiator fluid against freezing downto -10 degrees celsius?

2. For benzene C6H6 the freezing point constant K is 5.12kgmol^-1 and its notmal freezing point is 5.5 degrees celsius. Whatis the freezing point of a solution containing 100.0 g of benzeneand 20.0 g of naphthanlene C10H8 ?

5. Calculate the freezing point of a 0.2 m CaCl2 aqueoussolution, assuming it dissociates completely to form ions insolution.