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Q.

When sodium is reacted with water. What is the balanced equation?

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a

Na+H2O→NaOH+H2

b

3Na+2H2O→3NaOH+H2

c

2Na+2H2O→2NaOH+H2

d

4Na+2H2O→2NaOH+2H2

answer is C.

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Detailed Solution

When salt and water interact, sodium hydroxide and hydrogen gas are produced. The equation for the reaction is- 
Na+H2O→NaOH+H2 
This is not a balanced equation. The solution to the problem is- 
2Na+2H2O→2NaOH+H2 
Therefore, the coefficient in the balancing equation above contains the smallest whole numbers, 1, and 2. 

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When sodium is reacted with water. What is the balanced equation?