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Question

Write down the balanced chemical equation:

Hydrogen plus chlorine produces hydrogen chloride


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Solution

Balanced chemical equation:

A chemical equation in which the number of atoms of each element on both sides of the equation is equal is called a balanced chemical equation.

Step 1: Representation of the chemical reaction:

  • Hydrogen reacts with chlorine to produce hydrogen chloride.
  • The reaction can be written as:

H2Hydrogen+Cl2ChlorineHClHydrogenchloride

Step 2: Calculating the number of atoms on both sides of the reaction:

ElementsNumber of atoms on the reactant sideNumber of atoms on the product side
H21
Cl21

Step 3: Balancing the uneven number of atoms on the reactants and products side:

  1. As the number of atoms on the reactants and products side is different, so balancing of hydrogen and chlorine atoms can be done by multiplying the required coefficient for them in the reaction.
  2. This is done by multiplying 2 to hydrogen chloride on the product side only to make the two sides equal.

H2Hydrogen+Cl2Chlorine2HClHydrogenchloride

ElementsNumber of atoms on the reactant sideNumber of atoms on the product side
H22
Cl22

Now, we can see that the balanced equation is:

H2Hydrogen+Cl2Chlorine2HClHydrogenchloride


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