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What does 10H2O signify in the formula :...

What does `10H_2O` signify in the formula :`Na_2CO_3.10H_2O` ?

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1) `10H_2O` in `N/A_2CO_3*10H_2O` represents that there are 10 water molecules in one formula unit of sodium carboN/Ate.
2) But sodium carboN/Ate is not wet. It is hydrated sa)t.
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VGS PUBLICATION-BRILLIANT-ACIDS, BASES AND SALTS -Section-2
  1. What are the salts obtained from common salt ?

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  2. What is a rock salt ?

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  3. What does 10H2O signify in the formula :Na2CO3.10H2O ?

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  4. Write the formulas of gypsum and Plaster of Paris.·

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  5. Write any two Acid Base indicators.

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  6. Which salt is used in the manufacture of borax?

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  7. What is the name of aqueous sodium chloride ?

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  8. Who introduced pH ?

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  9. Is the substance present in antacid tablet acidic or basis ?

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  10. Give pH of neutral, acid and base.

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  11. What is conformation test for hydrous and anbydrous salt ?

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  12. P.O.P, cement, calcium chloride should be stored in moisture proof con...

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  13. Give some examples for hydrous and anhydrollls salts.

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  14. X is a substance, which was given red colour ,ivith methyl orange solu...

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  15. "A + B to Salt + water". It was written on the blackboard. To find the...

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  16. There are 3 substances in test tube A, test tub1e B and test tube C. B...

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  17. Suggest to your friend, the substances required to prepare sodium zinc...

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  18. X' is a substance which gives CO2 , water and. common salt on adding H...

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  19. Observe and prepare two questions while doillLg the following activity...

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  20. Predict 'X' from the given figure. If X+basetowater+NaCl

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