Directions for setting up EXCEL for the Delta H of Vaporization of Water Lab
This is what the headings should look like:
A
Temp (°C)
B
Temp (K)
C
1/Temp (K)
Your Data Here
D
Volume of air
(mL)
Your Data Here
E
Pair (torr)
F
PH20 (torr)
G
ln PH2O
Equation for Column B
(next to fx in EXCEL, type in) = A3 + 273.15
Equation for Column C
(next to fx in EXCEL, type in) = 1/B3
Equation for Column E
(next to fx in EXCEL, type in) = (moles of air you calculated*0.08206*B3)/(D3/1000)*760
Equation for Column F
(next to fx in EXCEL, type in) = 746.32 – E3
Equation for Column G
(next to fx in EXCEL, type in) = lnF3
TO MAKE THE GRAPH:
Copy and paste Columns G and C into new cells, then use “Insert” and “Scatter.” DO NOT CONNECT THE POINTS IN THE SCATTER PLOT. Once
the graph is plotted, RIGHT CLICK ONONE OF THE DATA POINTS and choose “Add Trendline” then click “linear” and down at the bottom click
“Display Equation on Chart”