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Finding H2O

Aim: To test different materials (Tap water, Salt water, Sucrose solution, Acetic Acid (2m), methylated spirits and unknown “X”) and see if thy contain h2o.

Hypothesis: I think that all of the liquids will contain water as they are all clear and have he same density. Except for methylated spirits, which is a form of alcohol, which makes me think, it is purely one thing.

Apparatus: combat chloride paper (II), anhydrous copper sulphate (II), 12 porcelain trey, eye dropper, spatula, paper towels, tap water, mentholated spirits, salt water, sucrose solution, 2m acetic acid and unknown (solution x)

Diagram:

Cobalt chloride paper

Cobalt chloride paper

Copper (II) Sulphate

Copper (II) Sulphate

Unknown(liquid X)

Unknown(liquid X)

Acetic Acid (2m)

Acetic Acid (2m)

Sucrose Solution

Sucrose Solution

Salt Water

Salt Water

Methylated spirits

Methylated spirits

Tap water

Tap water

Method:

Part A

1- Get a porcelain tray and put cobalt chloride paper in 6 of the holes in the tray.

2- Put the liquids individually on each in each of the holes.

3- If the paper turns pink it means that there is h2o.

4- Record your result.

Part B

1- With the remaining 6 spots on the porcelain tray put copper sulphate.

Does it contain water | TapWater | MethylatedSprits | SaltWater | SucroseSolution | AceticAcid | UnknownX |

Cobalt ChloridePaper | Yes | No | Yes | Yes | Yes | Yes |

AnhydrousCopper | Yes | No | Yes | Yes | Yes | Yes |

Presence of Water | Yes | No | Yes | Yes | Yes | Yes |

2- Then put the different liquids on to each of them if the colour is blue it means it contains water.

3- Record your results.

Result:

Discussion/Analysis- Were the results accurate?

Yes I believe so as there were 2 testers we used to test for the presence of H2O and they both came up with the same result on each occasion.

How did the results compare to the hypothesis?

I was almost...