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Question

2Na+2H2OxNaOH+H2

The value of x is:


A

1

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B

2

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C

3

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D

4

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Solution

The correct option is B

2


Keeping in mind that a balanced chemical equation has equal number of atoms of each element equal on both sides, let us balance the equation given.

Since there are 2 atoms of sodium on the reactants side, filling a 2 in place of x balances the given equation because it balances the number of atoms of hydrogen and oxygen atoms on both sides.

i.e., 2Na+2H2O2NaOH+H2

The value of x is 2.


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