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प्रश्न
Fill in the blank with appropriate word/words.
3 Cu + 8 HNO3 (dilute) → _______ + 4H2O + _________
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उत्तर
3Cu + 8HNO3 (dilute) → 3Cu(NO3)2 + 4H2O + 2NO
APPEARS IN
संबंधित प्रश्न
How will you prepare the following from nitric acid?
copper nitrate
The action of heat on the blue crystalline solid X gives a reddish brown gas Y, a gas which re-lights a glowing splint and leaves a black residue. When gas Z, which has a rotten egg smell, is passed through a solution of X, a black ppt. is formed.
- Identify X, Y and Z.
- Write the equation for the action of heat on X.
- Write the equation between solution X and gas Z.
In which ratio reactants are taken in Ostwald process?
Write the equations involved in Ostwald process.
Write a balanced equation for the production of nitrogen dioxide using copper.
Name the product, catalyst and approximate temperature maintained in Ostwald's process. How is the temperature maintained in the Ostwald's process?
Write the balanced equation for the equation preparation of nitric acid from potassium nitrate.
What do you see when concentrated nitric acid is added to copper?
Lead nitrate decomposes on heating to give ______.
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.
