मराठी

Balance the Following Equation: Zn + Koh → K2zno2 + H2

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प्रश्न

Balance the following equation:

Zn + KOH → K2ZnO2 + H2

एक शब्द/वाक्यांश उत्तर
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उत्तर

Zn + 2KOH → K2ZnO2 + H2

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पाठ 1: The Language of Chemistry - Exercise 1 (B) [पृष्ठ १५]

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सेलिना Concise Chemistry [English] Class 9 ICSE
पाठ 1 The Language of Chemistry
Exercise 1 (B) | Q 5.03 | पृष्ठ १५

संबंधित प्रश्‍न

Write the balanced equation for the following reaction, and add the state symbol:

Sodium hydroxide reacts with sulphuric acid to produce sodium sulphate and water.


With the help of an appropriate example, justify that some of the chemical reactions are determined by the evolution of a gas.

Give a chemical equation for the reaction involved in the above case.


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.

Write a balanced chemical equation with state symbols for the following reaction:

Barium chloride solution reacts with sodium sulphate solution to give insoluble barium sulphate and a solution of sodium chloride.


Balance the following equation. Also name the product formed. 

`"CO" + "O"_2  → " CO"_2`


Balance the following equation. Also name the product formed. 

FeCI2 + CI2 →  FeCI3


Balance the following equation:

Zn + HNO3 `→` Zn(NO3)2 + H2O + NO2


Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.

Heat energy


Balance the following simple equation:

FeCl2   +   Cl2  →  FeCl3 


Which of the following is not a physical change?


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