Answer:
(a). For water the reaction is Endothermic & for HCL the reaction is Exothermic.
(b). The heat gain by the water is Q = 2.814 KJ
Explanation:
Given data
Mass of water = 100 gm
Initial temperature of HCL = 44.6 °c
Initial temperature of water = 24.6 °c
Final temperature of both substances = 31.3 °c
(a). For water the reaction is Endothermic because the temperature of water is increases during the mixing process.
But for HCL the reaction is Exothermic because the temperature of HCL is decreases.
(b). Heat gain by water is given by
[tex]Q = m C ( T_{2} - T_{1} )[/tex]
Q = 0.1 × 4.2 × (31.3 - 24.6)
Q = 2.814 KJ
Therefore the heat gain by the water is Q = 2.814 KJ
A. The reaction is endothermic for water and exothermic for HCl.
B. The heat gained by the water is 2803.28 J
A. Determination of the nature of the reaction.
Initial temperature of HCl = 44.6 °C
Initial temperature of water = 24.6 °C
Final temperature of both substance = 31.3 °C
From the above, we can conclude as follow:
B. Determination of the heat gained by the water.
Q = MCΔT
Q = 100 × 4.184 × 6.7
Q = 2803.28 J
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