Question

How many grams of H₂ are produced with the reaction of 36 grams of water? *

10 points


0.25 g

0.50 g

1.0 g

2.0 g

Answer 1

`m_(H_2)=4gH_2`

Step-by-step explanation:

Hello,

In this case, water decomposition is represented by:

`2H_2O\rightarrow 2H_2+O_2`

Thus, since water molar mass is 18 g/mol and hydrogen molar mass is 2 g/mol and they are in a 2:2 molar ratio, the produced grams of hydrogen result:

`m_(H_2)=36gH_2O*(1molH_2O)/(18gH_2O)*(2molH_2)/(2molH_2O)*(2gH_2)/(1molH_2) \\\\m_(H_2)=4gH_2`

Best regards.