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2 May, 07:51

What is the element presented, in this compound?

Test: A small amount of the sample is mixed with cupric oxide in a test tube. The test tube is heated and the issuing gas is passed through a saturated solution of baric hydroxide.

Observation: The solution turns cloudy.

Test: A small amount of sample is added to sodium metal in a fusion tube and heated. The test tube is then plunged in to a distilled water bath. The fusion tube breaks. The content of the fusion tube is then dissolved in the distilled water, using a glass rod. The solution thus obtained is boiled and filtered. Freshly prepared solution of sodium nitroprusside is added to about 1 milliliter of the filtered solution.

Observation: The color of the solution turns violet.

Test: A compound is fused with sodium peroxide and extracted with water. This solution is heated with nitric acid and ammonium molybdate solution.

Observation: A yellow colored precipitate results.

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Answers (1)
  1. 2 May, 08:06
    0
    compound name compound formula elements present

    water H2O hydrogen (H) and oxygen (O)

    ammonia NH3 nitrogen (N) and hydrogen (H)

    carbon monoxide CO carbon (C) and oxygen (O)

    carbon dioxide CO2 carbon (C) and oxygen (O)
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