Answer:
303 kilo Joules is the quantity of heat is released.
Explanation:
Moles of NaOH =
According to recation 1 mole of NaOh gives 1 Mole of water, then 3.125 moles of NaOH will give ;
of water
The heat of neutralization for the formation of water = -55.9 kJ/mol
Heat evolved on formation of 3.125 moles of water : Q
The heat of solvation for sodium hydroxide = -41.0 kJ/mole
Heat evolved by solvation of 3.125 moles of NaOH = Q'
Total quantity of heat is released when NaOH and HCl are mixed:
Q + Q' = -175 kJ + (-128) kJ = -303 kJ
(negative sign indicates that energy released)
303 kilo Joules is the quantity of heat is released.