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Name an indicator which is pink in alkal...

Name an indicator which is pink in alkaline solution but turns colourless in acidic solution.

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Phenolphthalein
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Name an indicator which is red in acid solution but turns blue in basic solution.

Which fo the following statements is corect ? (i) Phenolphthalenin is colorless in the acid solution but turns pink in the basic solution. (ii) Methly orange is yellow in acid solution but turns red in the basic solution. (iii) Pheneolphthalein is pink in the acid solution but turns colorless in the basic solution . (iv) Methyl orange is red in acid solution but turns yellow in the basic solution.

The indicators which turn red in acid solution are:

The indicator which produces a pink colour in an alkaline solution is:

Name one indicator which turns red on adding an acid.

Fehling's solution is an alkaline solution of

Which of the following ions is colourless in solution?

LAKHMIR SINGH & MANJIT KAUR-ACID, BASES AND SALTS-Exercise
  1. What colours do the following indicators turn when added to an acid (s...

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  2. Name an indicator which is red in acid solution but turns blue in basi...

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  3. Name an indicator which is pink in alkaline solution but turns colourl...

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  4. When a solution is added to a cloth strip treated with onion extract, ...

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  5. When a solution is added to vanilla extract, then the characteristic s...

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  6. Which gas is usually liberated when an acid reacts with a metal? Illus...

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  7. Name the gas evolved when dilute HCl reacts with sodium hydrogencarbon...

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  8. Give the names and formulae of two strong acids and two weak acids.

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  9. Name one natural source of each of the followign acids. (a). Citric ...

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  10. Name one animal and one plant whose stings contain formic acid (or met...

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  11. How is the concentration of hydronium ions (H(3)O^(+)) affected when a...

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  12. Write word equations and balanced equations for the reactions taking p...

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  13. Complete and balance the following chemical equations (a). Zn(s)+HCl...

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  14. Fill in the blanks in the following sentences: (a). Acids have a tas...

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  15. (a). What is an indicator? Name three common indicators. (b). Name t...

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  16. What is an olfactory indicator? Name two olfactory indicators. What is...

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  17. Which gas is usually liberated when an acid reacts with a metal? Illus...

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  18. While diluting an acid, why is it recommended that the acid should be ...

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  19. What happens when an acid reacts with a metal hydrogencarbonate? Write...

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  20. (a). What happens when dilute hydrochloric acid is added to sodium car...

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