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With the help of a drop of an indicator ...

With the help of a drop of an indicator solution, how would you know whether a solution consists of `Na_2CO_3 or NaHCO_3` ?

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A drop of phenolphthalein will change the colouriess solution of `Na_2CO_3` to purple but the colourless solution of `NaHCO_3` will remain unchanged.
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CHHAYA PUBLICATION-s-BLOCK ELEMENTS -EXERCISE (SHORT-TYPE QUESTIONS)
  1. The halides of berylium dissolve in organic solvents but those of bari...

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  2. Which out of Ca(OH)2 and Mg(OH)2 is more soluble in water and why ?

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  3. MgCO3 is more soluble in water than CaCO3. Give reason.

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  4. Which out of Mg(OH)2 & Ca(OH)2 is a stronger base and why ?

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  5. Anhydrous CaCl2 is used as a dehydrating agent- why?

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  6. Discuss the biological importance of Ca^(2+) and Mg^(2+) ions.

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  7. Discuss the biological importance of Na^(+) and K^(+) ions.

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  8. Lil is more soluble than KI in ethanol. Explain.

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  9. MgSO4 is more soluble in water than SrSO4 and decomposes at a much low...

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  10. The aqueous solution of sodium carbonate is alkaline - why?

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  11. K2CO3 cannot be prepared by Solvay process - why?

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  12. How can pure NaCI be prepared from common impure NaCl?

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  13. Why does common salt become wet in rainy season?

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  14. With the help of a drop of an indicator solution, how would you know w...

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  15. The thermal decomposition of CaCO3 is a reversible reaction: CaCO3 hAr...

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  16. How can fused calcium chloride be prepared? Give two important uses of...

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  17. State with reactions, what happens when sulphur dioxide is slowly pass...

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  18. What happens when- quicklime is heated with silica,

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  19. What happens when- hydrated magnesium chloride is heated in presence o...

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  20. What do you mean by setting of Plaster of Paris?

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