Write up concentration vs conductivity Task 3 write up level 3 BTEC science Unit 4 Assignment 3 - Identifying unknown substances & concentrations
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write up experiment 1 concentration vs conductivit
Iman Boukjija Zamani
11053457
concentration vs conductivit
Aim To determine the concentration of an unknwon solution using conductivity of
known series of solutions
Equipment
Mesuring cilinder
5 beakers
Conductivity meter
Distilled water
Sodium chloride solutions
pippete
Method
1. First step was to make serial solutions of concentration from the stock solution
on 1M
2. This was done by taking a measuring cilinder, we started by measuring 20ml
of the 1M stock solution in the measuring cilinder and the rest will be willed up
to 100 with distilled water, this way we got 0.2 m concentrated solution.
3. We use this same procedure to make the rest of the concentration, always
using 20, 40, 60 or 80ml of the 1M stock solution, and filling up the rest till 100
with Distilled water.
4. After each concentrated solution is done, we poured it in the 4 beackers, and
we mesure the conductivity of each, wich we will use later to plot a graph,
5. We also mesured the 1M stock solution with the Conductivity meter
6. And to finish off, the teacher made a custome moles concentrated solution, by
pouring water and one of the aldready make concentrated solution in a
beaker, wich i also mesured with the Conductivity meter.
Results table
Mole concentration Conductivity
1.0M stock solution 2131
0.8M 1738
0.6M 1326
0.4M 887
0.2M 454
Unknown Stock solution 387
Risk assesment
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