pH Scale

IMPORTANT

pH Scale: Overview

This topic covers concepts such as pH Scale, Expression for pH, Expression for pOH, Relation between pH and pOH, Calibration of pH Scale, pH Values of Common Substances and Calculation of pH of solutions.

Important Questions on pH Scale

MEDIUM
IMPORTANT

1 M NaCl and 1 M HCl are present in an aqueous solution. The solution is –

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What happens if you don't calibrate a pH meter?

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What is purpose of pH calibration?

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Do all pH meters need calibration?

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Which solution is used to calibrate pH?

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How many types of calibration can be done in a pH meter?

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If the H+ ion concentration in the blood pH=7.36 is x  times greater than that in the spinal fluid pH=7.53, Round off the value of x  to one decimal and report the value of 2x

EASY
IMPORTANT

If the hydroxide ion concentration of a solution of  pH  6.2 is A X10-8

Report the value of A by multiplying with10 and rounding off to two significant figures.

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The pH of 0.001 M BaOH2 solution will be _____.

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The pH of 0.001 M BaOH2 solution will be

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When rain is accompanied by a thunderstorm, the collected rain water will have pH value

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Define the pH of a solution. What is the pH of pure water?

EASY
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How many times a 0.1 M strong monobasic acid solution should be diluted so that pH of the resulting solution is tripled?

MEDIUM
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The pH of distilled water is _____.

EASY
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_____ are bitter in taste and feel soapy to touch.

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Which of the following type of medicine is used to treat indigestion?

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Which of the following is a characteristic of 'strong acids'?

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Which of the following is an olfactory indicator?

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The substances whose odour changes in the acidic or basic media are known as _____ indicators.

EASY
IMPORTANT

Which of the following can be used as an acid-base indicator by a visually impaired student?