मराठी

Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same. C2H5OH + 3O2 → 2CO2 + 2H2O

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प्रश्न

Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.

C2H5OH + 3O2 → 2CO2 + 2H2O

एका वाक्यात उत्तर
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उत्तर

C2H5OH + 3O2 → 2CO2 + 2H2O

Correct balance 3H2O

C2H5OH + 3O2 → 2CO2 + 3H2O

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पाठ 1: The Language Of Chemistry - The Language Of Chemistry

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विराफ जे. दलाल Simplified ICSE Chemistry [English] Class 9
पाठ 1 The Language Of Chemistry
The Language Of Chemistry | Q 4.06

संबंधित प्रश्‍न

2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube. When the contents are warmed, a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid.


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.

  1. What do you think metal X could be?
  2. Write the name, formula and colour of salt XSO4.
  3. What is the blue precipitate Y?
  4. 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.

When a mixture of gases X and Y is compressed to 300 atm pressure and then passed over a catalyst consisting of a mixture of zinc oxide and chromium oxide (heated to a temperature of 300°C), then an organic compound Z having the molecular formula CH4O is formed. X is a highly poisonous gas which is formed in appreciable amounts when a fuel burns in a limited supply of air; Y is a gas which can be made by the action of a dilute acid on an active metal; and Z is a liquid organic compound which can react with sodium metal to produce hydrogen gas.

  1. What are X, Y and Z?
  2. Write a balanced chemical equation of the reaction which takes place when X and Y combine to form Z. Indicate the conditions under which the reaction occurs.

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