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After the enzyme reaction begun we measured the height of the froth in test tubes A to D.

The table was prepared and the results had been jotted down. We also repeated the experiment for reliable results. Results: pH Foam Measured 1st Attempt Foam Measured 2nd Attempt Average mm mm m 41. Mm mm m mm m mm m mm m 1 mm mm mm m 86. Mm Conclusion: The results above show that pH 7 had the highest average foam height.The enzyme is working its best as pH is the optimum pH for the enzyme. Evaluation: Overall the experiment worked well however there might have been a tee minor errors for example the amount of detergent dropped into the test tubes could have changed the results and also the pH labels might have been labeled wrong.

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Another error could have been poor timing, the test tubes being in the water bath for too long could have altered the results.

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