Advertisements
Advertisements
प्रश्न
Balance the given equation:
NH3 + CuO 
Cu +N2 +H2O
उत्तर
2NH3 + 3CuO →3Cu + N2 + 3H2O
APPEARS IN
संबंधित प्रश्न
Translate the following statement into chemical equation and then balance the equation:
Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.
What are the various ways in which a chemical equation can be made more informative? Give examples to illustrate your answer.
State one characteristic of the chemical reaction which takes place when wax is burned in the form of a candle?
Is Electrolysis of water an endothermic reaction or an exothermic reaction?
Write down what you understood from the following chemical reaction.
AgNO3(aq) + NaCI(aq) → AgCI ↓ + NaNO3(aq)
Match column A with column B.
| Column A | Column B |
| (a) Blue salt changes to white and then black | (i) Ammonium dichromate |
| (b) Orange coloured compound changes to green. | (ii) Iodine |
| (c) Red compound changes to brown and then yellow. | (iii) Zinc Nitrate |
| (d) White to yellow when hot and white when cold. | (iv) Copper sulphate |
| (e) Violet solid changes to violet vapours. | (v) Red Lead |
Define: Endothermic reaction
A chemical reaction is generally accompanied by certain external indications or characteristics. These include – change of – (a) colour (b) state (c) smell (d) evolution of gas (e) formation of precipitate (f) evolution or absorption of heat. With reference to change of colour – state the change in colour seen when the following are heated – lead [IV] oxide.
What is a chemical equation?
Why should a magnesium ribbon be cleaned before burning in air?
