ViscosityViscosity

By Mike Bruder and Carey Hammel

Required ProjectRequired Project

Our required project was to make our own viscometer. We used a large graduated cylinder and a stopper attached to a wire to achieve this. To use this, fill the cylinder with you liquid and measure the time it takes for the stopper to reach the bottom of the cylinder.

ProblemProblem

How does the viscosity of water change as methyl alcohol is added to it, at different percentages?

HypothesisHypothesis

We thought that the viscosity would get larger as more methyl alcohol was added. We think this because the viscosity of methyl alcohol is higher than the viscosity of pure water.

ExperimentExperimentWe started testing the

viscosity of the mixtures. We made our mixtures by adding Xml of water and Xml of methyl alcohol, until it added to 100ml.

ExperimentExperiment

ResultsResults

20 degree F Water = .9454

90% Water 10% Methyl Alcohol = 1.1817

80% Water 20% Methyl Alcohol = 1.98

70% Water 30% Methyl Alcohol = 1.705

60% Water 40% Methyl Alcohol = 1.8967

50% Water 50% Methyl Alcohol = 1.712

40% Water 60% Methyl Alcohol = 1.845

Methyl Alcohol = .95607

ResultsResults

1.5

1.8451.712

1.89671.705

1.98

1.18170.9454

0

0.5

1

1.5

2

2.5

100-0 90-10 80-20 70-30 60-40 50-50 40-60 30-70

Mixture (water-methyl alcohol)

Vis

co

sit

y Graph of different viscosities.

ConclusionConclusion

Our conclusion is that the viscosity would rise to a high point at 50-50 then would again lower itself. We can’t be sure because we didn’t finish and some of our results may have been faulty.