Question

write a short note on pH scale.​

Answer 1

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The pH Scale

It is a scale used for measuring hydrogen ion concentration. The p in pH stands for potenz which means power in German.

It has values ranging from 0 (very acidic) to 14 (very alkaline). pH is a number which indicates the acidic or basic nature of a solution.

Higher the hydronium ion concentration present in the solution, lower is its pH value (pH means power of hydrogen ions).

• If pH > 7, solution is basic.

• If pH =7, solution is neutral.

• If pH <7. solution is acidic.

Pure water is neutral because of the absence of free ions. A paper impregnated with the universal indicator is used for measuring pH. Now a days, pH meter, an electronic device, is used to measure the pH value.

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Answer 2

Answer:

pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.

Explanation:

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