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Question
Give a chemical test to distinguish between the following gases:
Chlorine and nitrogen dioxide
Distinguish Between
Solution
Chlorine [Cl2]:
- Moist litmus [blue] turns red and gets bleached,
- Turns moist starch iodide paper blue black.
Nitrogen dioxide [NO2]:
- Turns blue litmus red.
- Displaces I2 from KI and turns potassium iodide paper brown.
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Laboratory Preparation of Nitrogen Dioxide
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RELATED QUESTIONS
8.2 grams of calcium nitrate is decomposed by heating according to the equation
\[\ce{2Ca(NO3)2 -> 2CaO + 4NO2 + O2}\]
Calculate the following:
Volume of nitrogen dioxide obtained at STP
[Atomic weights: Ca − 40, N − 14, 0 − 16]
8.2 grams of calcium nitrate is decomposed by heating according to the equation
\[\ce{2Ca(NO3)2 -> 2CaO + 4NO2 + O2}\]
Calculate the following:
Mass of CaO formed
[Atomic weights: Ca - 40 , N - 14, 0 - 16]
