- #1
Frank665
- 2
- 0
Question: Use the experimental values to calculate the enthalpy change in each system.
Observation
Quantity of reactant 1 5.61 g KOH(s)
Quantity of reactant 2 N/A
Initial Temperature (oC) 20.0
Final Temperature (oC) 24.1
MY ANSWER
ΔT = tf - ti
= 24.1 oC - 20.0 oC
= 4.1 oC
qt = 0
qt = qreaction+ qwater
qreaction= - qwater
qp= - mwaterCp(water) DT
qp = mc ΔT
= (5.61 g) (4.186 joule/gram °C) (4.1 oC)
=96.14 J
Where H is the Hfinal minus Hinitial and q is heat
ΔH = ( mcΔT)/n
n = (mass of compound)/(molar mass of compound)
= (5.61 g KOH(s))/(56.1 g/mol)
=
Observation
Quantity of reactant 1 5.61 g KOH(s)
Quantity of reactant 2 N/A
Initial Temperature (oC) 20.0
Final Temperature (oC) 24.1
MY ANSWER
ΔT = tf - ti
= 24.1 oC - 20.0 oC
= 4.1 oC
qt = 0
qt = qreaction+ qwater
qreaction= - qwater
qp= - mwaterCp(water) DT
qp = mc ΔT
= (5.61 g) (4.186 joule/gram °C) (4.1 oC)
=96.14 J
Where H is the Hfinal minus Hinitial and q is heat
ΔH = ( mcΔT)/n
n = (mass of compound)/(molar mass of compound)
= (5.61 g KOH(s))/(56.1 g/mol)
=