A method of measuring pH is all the above : pH meter , pH indicator solution and pH paper.
The pH is a measure of the concentration of the hydronium ion ( H₃O⁺). The pH value is in between the 0 to 14 . the pH value above 7 is basic. The pH value below 7 is an acidic. there are three ways to measure the pH value : the pH meter , the pH indicator solution and the pH paper test.
Thus, A method of measuring pH is all the above : pH meter , pH indicator solution and pH paper.
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