`CaCl_(2).6H_(2)Ooverset(473K)(rightarrow) CaCl_(2).xH_(2)O overset(fusion)rightarrow CaCl_(2)`, х is

CaCl_(2)+Na_(2)SO_(4)to No reaction

Read following statement(s) carefully and select the right option : (I) The enthalpy of solution of CaCl_(2). 6H_(2)O in a large volume of water is endothermic to the extent of 3.5 kcal/mol. If DeltaH=-23.2 " kcal" for the reaction, CaCl_(2)(s)+6H_(2)O(l)rarrCaCl_(2).6H_(2)O(s) then heat of solution of CaCl_(2) (anhydrous) in a large volume of water is - 19.7 kcal/mol (II) For the reaction 2Cl(g)rarrCl_(2)(g) , the sign of DeltaH and DeltaS are negative.

CaCl_(2)+H_(2)SO_(4)underset(-HCl)overset((p))rarrCaSO_(4).2H_(2)Ooverset((q))rarr(r)overset(gt383K)rarr(s) Which of the following option describes, the products, reactants and the reaction conditions.

CaCl_(2)+Na_(2)C_(2)O_(4) to CaC_(2)O_(4)darr+2NaCl

CaCl_(2)+Na_(2)C_(2)O_(4) to CaC_(2)O_(4)darr+2NaCl

Ionic strength of 0.4 M CaCl_(2) is

CaCO_(3) + ………to CaCl_(2) + H_(2)O + ……………

Gibbs-Helmoholtz equation relates the free energy change to the enthalpy and entropy changes of the process as (DeltaG)_(PT) = DeltaH - T DeltaS The magnitude of DeltaH does not change much with the change in temperature but the energy factor T DeltaS changes appreciably. Thus, spontaneity of a process depends very much on temperature. The dissolution of CaCl_(2).6H_(2)O in a large volume of water is endothermic to the extent of 3.5 kcal mol^(-1) . For the reaction. CaCl_(2)(s) +6H_(2)O(l) rarrCaCl_(2).6H_(2)O(s) DeltaH is -23.2 kcal . The heat of solution of anhydrous CaCI_(2) in large quantity of water will be

In the reactions HCl + NaOH rightarrow NaCl + H_(2)O + x cal. H_(2)SO_(4) + 2NaOH rightarrow Na_(2)SO_(4) + 2 H_(2)O + y cal.

CaCl_(2)+Na_(2)SO_(4)toCaSO_(4)↓+2NaCl