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प्रश्न
Balance the following simple equation:
CO2 + C → CO
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उत्तर
CO2 + C → 2CO
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संबंधित प्रश्न
Complete and balance the following equation:
Ca(OH)2 + .......... \[\ce{-> CaCO3 + H2O}\]
Write any two observations in an activity which may suggest that a chemical reaction has taken place. Give an example in support of your answer.
A metal X forms a salt XSO4. The salt XSO4 forms a clear solution in water which reacts with sodium hydroxide solution to form a blue precipitate Y. Metal X is used in making electric wires and alloys like brass.
- What do you think metal X could be?
- Write the name, formula and colour of salt XSO4.
- What is the blue precipitate Y?
- Write a chemical equation of the reaction which takes place when salt XSO4 reacts with sodium hydroxide solution. Give the state symbols of all the reactants and products which occur in the above equation.
What information do you get from the equation H2+ Cl2 → 2HCl ?
Write your observation and name the product when zinc reacts with dilute hydrochloric acid.
Balance the following equation:
H2O + Cl2 → HCl + O2
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of acid required.
(a) Give only one suitable chemical test to identify the following gases.
- Ammonia
- Sulphur dioxide
- Hydrogen Chloride
- Chlorine
- Carbon Dioxide
- Oxygen
- Hydrogen
(b) Select a basic gas mentioned in Q.1 (a). How is the basic nature suspected?
(c)Select acidic gases from the gases mentioned in Q.1 (a). How is the acidic nature suspected?
(d) State the gas responsible for bleaching action.
(e)Which gas turn blue cobalt chloride paper light pink?
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Electrical energy
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
Cl2 + 2H2O + SO2 → 4HCl + H2SO4
