Balance- Na - H2O-NaOH - H2-

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Standard VIII

Chemistry

Balancing Chemical Equations

Balance: Na +...

Question

Balance: $Na + H_{2} O \to NaOH + H_{2}$ .

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Solution

The skeletal equation: $Na + H_{2} O \to NaOH + H_{2}$
Step 1: As the three elements that are involved in the reaction are $Na, O and H$ . So just count the number of times an element is involved on both the left-hand as well as the right-hand side of the equation.
Element
Reactant (LHS)
Product (RHS)
Sodium 1 1
Oxygen 1 1
Hydrogen 2 3
So, as the Hydrogen atoms are not equal on both the sides that's why this is an unbalanced equation.
Step 2: So now for balancing the equation, on multiplying $NaOH and H_{2} O$ by 2, we will get a total of four Hydrogen atoms on both the sides of the equation, Now further to balance the Sodium atoms, we have to multiply $Na$ by 2.
Element
Reactant (LHS)
Product (RHS)
Sodium 2 2
Oxygen 2 2
Hydrogen 4 4
Therefore, the Reaction: $2 Na + 2 H_{2} O \to 2 NaOH + H_{2}$

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Element	Reactant (LHS)	Product (RHS)
Sodium	1	1
Oxygen	1	1
Hydrogen	2	3

Balance: Na+H2O→NaOH+H2.

Balance: $Na + H_{2} O \to NaOH + H_{2}$ .