Hydrate

Question 1

i)LiCl(s)+moisture
ii)NaCl(s)+moisture
iii)MgCl2(s) + moisture
iv)CaCl2(s) + moisture
v)SrCl2(s) + moisture
vi)BaCl2(s) + moisture

Answer 1

i)LiCl(s)+moisture—>LiCl.2H2O
ii)NaCl(s)+moisture—->NaCl(hydrate formation tendency inversely proportional to ionic radius)
iii)MgCl2(s) + moisture—->MgCl2.8H2O
iv)CaCl2(s) + moisture—->CaCl2.6H2O
v)SrCl2(s) + moisture—–>SrCl2.6H2O
vi)BaCl2(s) + moisture—–>BaCl2.2H2O

Question 2

MgCl2+H2O—>X
X–crystallization + heat—>Y
Y—heat–>Z
Y+ dry HCl—>A

Answer 2

MgCl2 + H2O—>MgCl2(aq)
MgCl2(aq)-crystallization,heat->MgCl2.6H2O
MgCl2.6H2O-heat->MgO + HCl+H2O
MgCl2.6H2O + dry HCl—>MgCl2(s)