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When a small piece of sodium is dropped into water they react to form sodium hydroxide and hydrogen gas, i.e - Leaving Cert Chemistry - Question e - 2019

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When a small piece of sodium is dropped into water they react to form sodium hydroxide and hydrogen gas, i.e. sodium + water → sodium hydroxide + hydrogen. Write a... show full transcript

Worked Solution & Example Answer:When a small piece of sodium is dropped into water they react to form sodium hydroxide and hydrogen gas, i.e - Leaving Cert Chemistry - Question e - 2019

Step 1

Write the unbalanced equation

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Answer

The initial reaction between sodium and water can be written as:

Na+H2O→NaOH+H2\text{Na} + \text{H}_2\text{O} \rightarrow \text{NaOH} + \text{H}_2

Step 2

Balance the equation

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Answer

To fully balance the equation, considering that two sodium atoms react with two water molecules, the balanced equation is:

2Na+2H2O→2NaOH+H22\text{Na} + 2\text{H}_2\text{O} \rightarrow 2\text{NaOH} + \text{H}_2

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