Question

Balance _Na+_H2O->_NaOH_H2

Answer 1

2Na + 2H20 -> 2NaOH + H2

Answer 2

Answer:

2Na + 2H₂O ⟶ 2NaOH + H₂

Step-by-step explanation:

Step 1. Pick the most complicated-looking formula (NaOH).

Put a 1 in front of it.

Na + H₂O ⟶ 1NaOH + H₂

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Step 2: Balance Na.

We have fixed 1 Na on the right. We need 1 Na on the left.

Put a 1 in front of Na.

1Na + H₂O ⟶ 1NaOH + H₂

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Step 3. Balance O.

We have fixed 1 O on the right. We need 1 O on the left.

Put a 1 in front of H₂O.

1Na + 1H₂O ⟶ 1NaOH + H₂

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Step 4. Balance H.

We have fixed 2 H on the left and 1 H on the right.

We have 2 H on the left and 3 H on the right. We need one more H (½ H₂) on the left.

Oops! Fractional coefficients! We must multiply all coefficients by a number to give integer coefficients.

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Step 5. Get rid of fractions.

Multiply all coefficients by2.

2Na + 2H₂O ⟶ 2NaOH + H₂

We have fixed 4 H on the left and 2H on the right, but we have another 2 H in the H₂.

H is balanced.

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Step 6. Write the balanced equation.

2Na + 2H₂O ⟶ 2NaOH + H₂