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The crystals of compound A on keeping in...

The crystals of compound A on keeping in air get converted into a white powder. Its solution in water gives blue colour with red litmus. It is used to remove permanent hardness of water.
Identify the substance. Write chemical formula of its crystalline form.

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MODERN PUBLICATION-ACID, BASES AND SALTS-EXERCISE
  1. The crystals of compound A on keeping in air get converted into a whit...

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  2. Name the gas produced when Sodium carbonate reacts with hydrochloric a...

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  3. Name the gas produced when Magnesium carbonate reacts with hydrochlori...

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

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  5. Name one strong and one weak acid.

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  6. Why is cold milk helps a person in neutralising acidity in the stomach...

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  7. Give the name and formula of acid present in vinegar?

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  8. Name the acids present in Orange?

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  9. Name the acids present in Lemon?

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  10. Name the acids present in Tomatoes.

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  11. The pH of fresh milk is 6. will its pH value increase or decrease when...

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  12. An acidic solution contains……………..ions.

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  13. A basic solution contains……………..ions.

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  14. Name two acid base indicators?

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  15. The pH values of some substances are given below:(i)Apples: 5.0-6.5(ii...

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  16. What is the pH of an acid having [H^+]=10^-3M

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  17. Will the OH^- ions concentration increase or decrease if a 1M NaOH sol...

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  18. Two solutions A and B have pH of 6 and 9 respectively. Which solution ...

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  19. Four test tubes A,B,C and D contain solutions of pH 3.0, 5.0, 6.0 and ...

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  20. Four test tubes A,B,C and D contain solutions of pH 3.0, 5.0, 6.0 and ...

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  21. Which of the following have large pH values: 1M CH3COOH or 1M HCl

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