Answer: 20.9 kJ
Explanation:
The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.
[tex]Q=m\times c\times \Delta T[/tex]
Q = Heat absorbed by water= ?
m= mass of water = 215.5 g
c = specific heat capacity = [tex]4.184J/g^0C[/tex]
Initial temperature of the water = [tex]T_i[/tex] = 34.4°C
Final temperature of the water = [tex]T_f[/tex] = 57.6°C
Change in temperature ,[tex]\Delta T=T_f-T_i=(57.6-34.4)^0C=23.2^0C[/tex]
Putting in the values, we get:
[tex]Q=215.5\times 4.184\times 23.2^0C[/tex]
[tex]Q=20918J=20.9kJ[/tex] (1kJ=1000J)
The heat absorbed by water is equal to the heat released during the reaction. Thus heat produced by chemical reaction is 20.9 kJ
