How fluid ounces of pure acid must be added to get 6% acidity?

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How fluid ounces of pure acid must be added to get 6% acidity?A gallon of white vinegar is labeled 5% acidity. How many fluid ounces of pure acid must be added to get 6% acidity?

The answer is 1.36 ounces. I would like to know how this is worked out.

I put the following equation together, but it does not come out right, what am I doing wrong?

128(0.05)+1X = 0.06

Thanks

-Pointy
Your working equation should be

(128)(0.05) + X(1) = (128 + X)(0.06)

6.4 + X = 7.68 + 0.06X

Combining terms,

0.94X = 7.68 - 6.4 = 1.28

X = 1.36 ounces

Hope this helps.

Helpful answer below. GERD — Comprehensive overview covers symptoms, treatment, diet issues of this acid reflux disease.

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