The hydroxide ion concentration of a solution is 1 × 10 - 8 M . What is the pH of the solution?

The concentration of one mole of hydroxide ions is 1 × 10 - 11 M The hydroxide ion concentration [ OH - ] = 1 . 0 × 10 - 8 M pOH = - log [ OH - ] = log 1 . 0 × 10 - 8 pH + pOH = 14 pH = 14 - p OH = 14 - 8 = 6 Hence, the pH of the solution is 6 .

E M B I B E

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Types of Chemical Reactions>Exercise>Q 11

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10th Tamil Nadu Board

IMPORTANT

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In our stomach, digestion of food occurs in which medium

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Important Questions on Types of Chemical Reactions

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Types of Chemical Reactions>Exercise>Q 12

What is the

pH

of

0.01 M NaOH

assuming complete ionisation?

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Types of Chemical Reactions>Exercise>Q 13

Explain the term reactant and product giving examples.

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Types of Chemical Reactions>Exercise>Q 14

What do you understand by the term chemical equation?

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Types of Chemical Reactions>Exercise>Q 15

Write fully balanced chemical equations and state the physical condition and physical state of the reactants and products in the following chemical reactions:

When solution of chlorine in water is exposed to sunlight. It forms hydrochloric acid and oxygen gas.

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Types of Chemical Reactions>Exercise>Q 16

Give any three examples of chemical reactions taking place in your everyday life.

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10th Tamil Nadu Board

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Science Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Types of Chemical Reactions>Exercise>Q 17

What is meant by word equation? Give an example.

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Types of Chemical Reactions>Exercise>Q 18

Give an example of a balanced chemical equation:
(a) Taking place in the presence of a catalyst.
(b) Taking place in the presence of heat.
(c) Taking place at a particular temperature.

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Types of Chemical Reactions>Exercise>Q 19

Differentiate between a balanced and unbalanced equation with an example for each.