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प्रश्न
Name a metal nitrate which on heating is changed into metal.
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उत्तर
Silver nitrate (AgNO3)
\[\ce{2AgNO3 ->[\Delta] 2Ag + 2NO2↑ + O2↑}\]
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संबंधित प्रश्न
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
Explain the following:
An all-glass apparatus is used in the laboratory preparation of nitric acid.
Can we use conc. HCl in place of Conc. H2SO4 ?
What are the reactants required for Ostwald process and what are their sources?
Complete and balance the following equation :
FeSO4 + NO + H2O → ______________
State the conditions for the oxidation of ammonia to nitrogen monoxide [nitric oxide], in the manufacture of nitric acid by Ostwald's process. Write the balanced equcation for the reaction.
Name the product, catalyst and approximate temperature maintained in Ostwald's process. How is the temperature maintained in the Ostwald's process?
Name the compounds required for the laboratory preparation of nitric acid.
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?
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.
