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A white solid L changes to yellow solid R when strongly heated but on cooling becomes white again. When L is reacted with dilute nitric(v) acid effervescence occurs.

  1. Identify L
  2. Write the equation for the reaction of L and nitric(v) acid.
  3. Name and write the formula of the salt formed when solid R dissolved in sodium hydroxide solution.

1 Answer

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  1. ZnCO3/Zinc Carbonate
  2. ZnCO3(s) +2HNO3(aq) → Zn(NO3)2(aq) +CO2(g) +H2O(l)
  3. Sodium Zincate/ Na2ZnO2

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