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प्रश्न
Identify the gas evolved when sulphur is treated with concentrated nitric acid.
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उत्तर
When sulphur is treated with concentrated nitric acid, it produces nitrogen dioxide gas.
संबंधित प्रश्न
What is passive iron?
Ammonia is used in the Ostwald process.
Name the catalyst used in the process.
Ammonia is used in the Ostwald process.
Name the oxidising agent used in this process.
Name the Following:
Gas obtained by treating manganese with 1% nirtric acid.
Brown ring disappear if the test tube is disturbed.
Complete and balance the following equation :
C + HNO3 → ___________
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
Dilute nitric acid is generally considered a typical acid except for its reaction with metals. In what way is dilute nitric acid different from other acids when it reacts with metals?
Give one test to distinguish between the following pair of chemicals.
Zinc nitrate solution and calcium nitrate solution
X, Y and Z are three crystalline solids that are soluble in water and have a common anion.
To help you to identify X, Y and Z, you are provided with the following experimental observations. Copy and complete the corresponding inferences in (a) to (e).
- A reddish-brown gas is obtained when X, Y and Z are separately warmed with concentrated sulphuric acid and copper turning added to the mixture.
INFERENCE 1: The common anion is the ______ ion. - When X is heated, it melts and gives off only one gas which re-lights a glowing splint.
INFERENCE 2: The cation in X is either ______ or ______. - The action of heat on Y produces a reddish-brown gas and yellow residue which fuses with a glass of the test tube.
INFERENCE 3: The metal ion present in Y is the ______ ion. - When Z is heated, it leaves no residue. Warming Z with sodium hydroxide solution liberates a gas which turns moist red litmus paper blue.
INFERENCE 4: Z contains the ______ cation. - Write the equations for the following reactions:
- X and concentrated sulphuric acid (below 200°C). (One equation only for either of the cations given in INFERENCE 2)
- The action of heat on Y.
- Concentrated nitric acid is added to copper turnings kept in a beaker.
