UPSC Exam > UPSC Questions > Which of the following has pH value 7?a)Pure...
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Which of the following has pH value 7?
- a)Pure water
- b)Neutral solution
- c)Basic solution
- d)Acidic solution
- e)None of the above
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which of the following has pH value 7?a)Pure waterb)Neutral solutionc...
Explanation:
Examples of solutions with pH value 7:
Other pH values:
Conclusion:
pH stands for potential of hydrogen ions. It is a measure of the acidity or basicity of a solution. The pH scale ranges from 0 to 14, with 0 being the most acidic and 14 being the most basic. A pH of 7 is considered neutral, meaning that the solution is neither acidic nor basic.
Examples of solutions with pH value 7:
- Pure water: Distilled or deionized water has a pH of 7 as it contains an equal number of hydrogen ions and hydroxide ions, making it neutral.
- Neutral solution: Any solution that has a pH of 7 is considered neutral, regardless of its composition. For example, a solution of sodium chloride (table salt) in water has a pH of 7, making it neutral.
Other pH values:
- Acidic solution: A solution with a pH below 7 is considered acidic. Examples include lemon juice, vinegar, and stomach acid.
- Basic solution: A solution with a pH above 7 is considered basic or alkaline. Examples include soap, bleach, and baking soda.
Conclusion:
In conclusion, a pH value of 7 indicates a neutral solution. Pure water and solutions with a pH of 7 are considered neutral. Solutions with a pH below 7 are considered acidic, while solutions with a pH above 7 are considered basic or alkaline.
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Community Answer
Which of the following has pH value 7?a)Pure waterb)Neutral solutionc...
Nature of Solution on the basis of pH value
- pH < 7:="" the="" solutions="" having="" ph="" value="" below="" 7="" are="" acidic="" in="" nature.="" these="" solutions="" turn="" blue="" litmus="" red.="" />
- pH = 7: The Solutions having pH equal to 7 are neutral in nature. These Solutions do not show any color change of litmus.
- pH > 7: The Solutions having pH more than 7 are basic in nature. These Solutions turn red litmus blue.
- The pH of pure water is 7 at 25°C.
- The pH of a neutral Solution is 7.Hence, the correct option is (b).
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