The manufacturers could be adding water, so the chip shops actually get less concentrated vinegar. ... Prediction/Hypothesis • I predict the stronger the vinegar the less watered down it is. ... Scientific Knowledge An acid is any compound which when dissolved in water will produce Hydrogen cat ions H+. ... The pH of an acid is from 1-6. 1, 2 and 3 are strong acids. 4,5 and 6 are weak acids. ... The pH of the solution should now be 7 because the alkali has neutralised the acid. ...

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• Approx Pages: 4
• Grade Level: High School