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Give a balanced equation for the following reaction: Copper reacts with concentrated nitric acid. - Chemistry

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प्रश्न

Give a balanced equation for the following reaction:

Copper reacts with concentrated nitric acid.

एका वाक्यात उत्तर
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उत्तर

\[\ce{Cu + 4HNO3 -> \underset{Copper nitrate}{Cu(NO3)2} + 2NO2 + 2H2O}\]

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Laboratory Preparation of Nitric Acid
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2023-2024 (March) Official

संबंधित प्रश्‍न

Name the Following:
Salt referred to as chile saltpeter.


Name the Following:
Two coloured nitrates.


Brown ring disappear if the test tube is disturbed.


Give reason for the following:
In laboratory preparation of nitric acid all the apparatus including cork should be made up of glass.


What happen when (Given balanced equation):
Nitric acid is added to washing soda and the resulting gas is passed through a freshly prepared lime water?


Choose the correct answer from the option given below :
Nitric acid on standing develops brownish colour which may be attributed to the presence of :


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.


Copy and complete the following table relating to important industrial processes output refers to the product of the process not the intermediate steps.

Name of process Inputs Catalyst Equation for catalysed reaction Output
Haber process Hydrogen        +      
 

Ammonia

      + 
     Air

    Nitric acid

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).

  1. 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.
  2. 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 ______.
  3. 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.
  4. 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.
  5. Write the equations for the following reactions:
    1. X and concentrated sulphuric acid (below 200°C). (One equation only for either of the cations given in INFERENCE 2)
    2. The action of heat on Y.
    3. Concentrated nitric acid is added to copper turnings kept in a beaker.

The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.

  1. Name A (a liquid), B (a solid), and C (a liquid). (Do not give the formulae.)
  2. Write an equation to show how nitric acid undergoes decomposition.
  3. Write the equation for the reaction in which copper is oxidised by concentrated nitric acid.

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