Answer:
The heat produced by this reaction is 2887J
Explanation:
The reaction of HCl with NaOH occurs as follows:
HCl + NaOH → H2O + NaCl + ΔH
Where ΔH is released heat due the reaction
The equation of a coffee cup calorimeter is:
Q = C*m*ΔT
Where Q is heat produced,
C is specific heat of the solution (4.18J/g°C),
m is mass of the solution (50mL + 50mL = 100mL = 100g -Because density is 1g/mL)
and ΔT is change in temperature (28.9°C - 22.0°C = 6.9°C)
Replacing:
Q = 4.184J/g°C*100g*6.9°C
Q = 2887J
The heat produced by this reaction is 2887J
The approximate amount of heat produced by the reaction is 2884 J
We'll begin by calculating the mass of the solution.
Volume of HCl = 50 mL
Volume of NaOH = 50 mL
Total volume = 50 + 50 = 100 mL
Density of solution = 1 g/mL
Mass = Density × Volume
Mass = 1 × 100
Initial temperature (T₁) = 22 °C
Final temperature (T₂) = 28.9 °C
ΔT = T₂ – T₁
ΔT = 28.9 – 22
Mass of solution = 100 g
Change in temperature (ΔT) = 6.9 °C
Specific heat capacity (C) = 4.18 J/g°C
Q = MCΔT
Q = 100 × 4.18 × 6.9
Thus, the approximate amount of heat produced by the reaction is 2884 J
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