How much H2O is produced when 30000 g of C2H2 burns completely? Answer in units of g.

PeterTheLobster asked Jun 3, 2023

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13 votes

PeterTheLobster asked Jun 3, 2023

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8 votes

1) First write a balanced chemical equation

$2\ C_(2) H_(2)_((g))$ +
$5\ O_(2)_((g))$ --->
$4\ CO_(2)_((g))$ +
$2\ H_(2)O_((g))$

2) Use dimensional analysis to find your answer.

= 30000g
C_(2) H_(2) ×
$(1\ mol\ C_(2)H_(2))/(26.04g\ C_(2)H_(2))$ ×
$(2\ mol\ H_(2)O)/(2\ mol\ C_(2)H_(2))$ ×
$(18.02g\ H_(2)O)/(1\ mol\ H_(2)O)$

= 20760.36866

= 20760g H₂O

Roxy answered Jun 9, 2023

by Roxy

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