Aluminum chloride can be formed from its elements: (i) 2Al(s)+3Cl2(g)⟶2AlCl3(s) ΔH°= ?

Use the reactions here to determine the ΔH° for reaction (i):

(ii) HCl(g)⟶HCl(aq) ΔH∘(ii)=−74.8kJ

(iii) H2(g)+Cl2(g)⟶2HCl(g) ΔH∘(iii)=−185kJ

(iv) AlCl3(aq)⟶AlCl3(s) ΔH∘(iv)=+323kJ

(v) 2Al(s)+6HCl(aq)⟶2AlCl3(aq)+3H2(g) ΔH∘(v)=−1049kJ

elements make up everything, and they combine to make compounds.

the answer is c

b. is the answer hoped i        

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.