#whatishess'slaw
Calculate the enthalpy of formation of anhydrous aluminium chloride, Al2Cl6 from the following data :
(i) 2Al(s) + 6HCl (aq) → Al2Cl6(aq) + 3H2(g);
△ r H ° = - 1004 . 0 k J
(ii) H2(g) + Cl2 (aq) → 2HCl(g);
△ rH ° = - 183 . 9 k J
(iii) HCl(g) + aq → HCl(aq);
△ r H ° = - 73 . 2 k J
(iv) Al2Cl6(s) + aq → Al2Cl6(aq);
△ r H ° = - 643 . 0 k J
Calculate the enthalpy of formation of anhydrous aluminium chloride, Al2Cl6 from the following data :
(i) 2Al(s) + 6HCl (aq) → Al2Cl6(aq) + 3H2(g);
△ r H ° = - 1004 . 0 k J
(ii) H2(g) + Cl2 (aq) → 2HCl(g);
△ rH ° = - 183 . 9 k J
(iii) HCl(g) + aq → HCl(aq);
△ r H ° = - 73 . 2 k J
(iv) Al2Cl6(s) + aq → Al2Cl6(aq);
△ r H ° = - 643 . 0 k J
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