Question

Calculate the grams of O2 produced from 25.55 grams of KClO3. Round to the nearest whole number.

2KClO3 → 2KCl + 3O2

Answer 1

`1\ \text{gram}`

Step-by-step explanation:

Mass of
`KClO_3` = 25.55 gram

Molar mass of
`KClO_3` = 122.5 g/mol

Molar mass of
`O_2` = 32.2 g/mol

The decomposition reaction is

`3KClO_3\rightarrow 2KCl+3O_2`

The mass of
`O_2` produced would be

`2.5* (1)/(122.5)* (3)/(2)* 32=0.9795\approx 1\ \text{gram}`

The mass of
`O_2` produced is
`1\ \text{gram}`.