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What happens to the crystals of washing ...

What happens to the crystals of washing soda when exposed to air ?

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They undergo efflorescence. As a result, washing soda `(Na_(2)CO_(3).10H_(2)O)` changes ot washing powder `(Na_(2)CO_(3).H_(2)O)` by losing nine `H_(2)O` molecules per molecule of washing soda.
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DINESH PUBLICATION-ACIDS, BASES AND SALTS -VERY SHORT ANSWER QUESTIONS
  1. Why alkalies like sodium hydroxide and potassium hydroxide should not ...

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  2. The pH of an aqueous solution decreases form 3 to 2. What will happen ...

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  3. What happens to the crystals of washing soda when exposed to air ?

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  4. State whether an aqueous solution of washing soda is acidic or alkalin...

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  5. What is the chemical name and chemical formula of baking soda ?

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  6. When a few drop os phenolphthalein indicator were added to the solutio...

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  7. Which is a stronger acid ? A solution with pH 5 and a solution with pH...

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  8. What is the nature of NaHCO(3) salt ?

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  9. Give two examples of the salts belonging to the chloride family.

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  10. What will be the colour acquired by a basic solution if a few drops of...

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

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  12. Arrange the following in increasing order of their pH values : NaOH ...

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  13. How does the pH change when the solution of base is diluted with water...

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  14. Which one or these has a higher concentration of H^(+) ions ? 1MHClo...

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  15. Which bases are called alkalies ? Give an example of alkalies ?

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

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  17. Write the name and chemical formula of the main product formed by heat...

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  18. Write the names and chemical formulae of the products formed by heatin...

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  19. A student dipped a strip of pH paper in distilled water taken in a tub...

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  20. The pH of rain water collected from two cities A and B was found to b...

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