Lab Titration.docx - Courtney Nikulka Lab Titration Purpose...

Courtney Nikulka
Lab Titration
Purpose: The purpose of this lab is to determine the concentration of sodium hydroxide using
titration.
Data Table:
Trial Volume of
acid used
Volume of
0.1M NaOH
used
Number of
moles of
NaOH
Number of
moles of acid
present
Concentration
of hydrochloric
acid mol/L
Trial 1 25 mL or
0.025 L
25.4 cm 3 or
25.4 mL or
0.0254 L
0.00254 mol 0.00254 mol 0.102 mol/L
Sample Equation:
Concentration =
amount of solute ∈ mol
volume
Mole = 0.00254 moles (same as NaOH because of the 1:1 ratio)
Volume of HCl = 25 / 1000 = 0.025 dm 3
Concentration =
0.00254
0.025
= 0.102 mol/dm 3
= 0.102 mol/L
Discussion:
1. One source of error is that the drops may not be small enough to get a precise
measurement. Using a dropper is also not the most precise way to measure the volume
of NaOH at the end either. Another source of error would be that the human eye could
miss the liquid turning slightly pink. Each person can perceive colour differently leading