Answer: double displacement
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
The balanced chemical equation is:
Thus as ions get exchanged , it is double displacement reaction.
Answer : The enthalpy change of dissolution of is 54.3 kJ/mole
Explanation :
Heat released by the reaction = Heat absorbed by the calorimeter + Heat absorbed by the water
where,
q = heat released by the reaction
= heat absorbed by the calorimeter
= heat absorbed by the water
= specific heat of calorimeter =
= specific heat of water =
= mass of water = 107.70 g
= change in temperature =
Now put all the given values in the above formula, we get:
Now we have to calculate the enthalpy change of dissolution of
where,
= enthalpy change = ?
q = heat released = 1.1123 kJ
m = mass of = 2.84 g
Molar mass of = 138.55 g/mol
Therefore, the enthalpy change of dissolution of is 54.3 kJ/mole