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प्रश्न
A solution has a pH of 7. Explain, how you would:
Decrease its pH, If a solution changes the color of litmus from red to blue, what can you say about its pH?
उत्तर
pH can be decreased by adding an acid such as HCl to it.
If a solution changes colour of litmus from red to blue, it shows that its pH is above 7.
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संबंधित प्रश्न
State one advantage of using ‘Ph paper’ for measuring the Ph value of an unknown solution.
Give the pH value of pure water.
What is the purpose of the pH scale?
State the inference drawn from the following observation:
pH of liquid R is 10. What kind of substance is R?
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A solution has a pH of 7. Explain how you would decrease its pH.
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M is an element in the form of a powder. M burns in oxygen and the product obtained is soluble in water. The solution is tested with litmus. Write down only the word which will correctly complete the following sentence.
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