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

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3Na+2H2O→3NaOH+H2

2Na+2H2O→2NaOH+H2

4Na+2H2O→2NaOH+2H2

Na+H2O→NaOH+H2

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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