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kozerog [31]
2 years ago
6

acetylene gas c2h2 undergoes combustion to produce carbon dioxide and water vapor How many grams of water are produced by the sa

me amount of C2H2?
Chemistry
1 answer:
ella [17]2 years ago
8 0

<u>Answer:</u> The amount of water produced in the given reaction is 0.692x grams.

<u>Explanation:</u>

Let us assume that the initial amount of acetylene gas given be 'x' grams. Now, to calculate the number of moles, we will use the formula:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}   ....(1)

Given mass of acetylene = x grams

Molar mass of acetylene = 26 g/mol

Putting values in above equation, we get:

\text{Number of moles of acetylene}=\frac{xg}{26g/mol}=\frac{x}{26}mol

The reaction of combustion of acetylene is given by the equation:

2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O

By Stoichiometry of the reaction:

2 moles of acetylene produces 2 moles of water.

So, \frac{x}{26} moles of acetylene will produce = \frac{2}{2}\times \frac{x}{26}=\frac{x}{26} moles of water.

Now, to calculate the amount of water produced, we use equation 1:

Molar mass of water = 18 g/mol

Moles of water = \frac{x}{26}mol

Putting values in equation 1, we get:

\frac{x}{26}mol=\frac{\text{Mass of water}}{18g/mol}

\text{Mass of water}=\frac{x}{26}\times 18=0.692x grams

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