Question

Need help haven’t taken chemistry Potassium chlorate decomposes into potassium chloride and oxygen gas.Relevant atomic masses: K-39.1, Cl-35.5, O-16.0.

Answer 1

6.84L of O2 can be produced.

Step-by-step explanation:

1st) It is necessary to write and balance the chemical reaction:

`2KClO_3\rightarrow2KCl+3O_2`

From the balanced reaction we know that 2 moles of KClO3 decompose into 2 moles of KCl and 3 moles of O2.

2nd) It is necessary to calculate the molar mass of KClO3 and O2:

- KClO3 molar mass: 122.6g/mol

- O2 molar mass: 32g/mol

3rd) In the conversion we have to consider:

- KClO3 molar mass.

- The stoichiometry of the reaction between KClO3 and O2: from 2 moles of KClO3, 3 moles of O2 are produced.

- The relation of moles and volume: 1 mole occupies 1 L.

`24.95gKClO_3*(1mol)/(122.6g)*(3molesO_2)/(2molesKClO_3)*(22.4L)/(1moleO_2)=6.84L\text{ }O_2`

So, 6.84L of O2 can be produced.