contestada

A 3.0 mole sample of KCIO3 was decomposed according to the equation:
2KCIO3(s) ===> 2KCI(s) + 3O2(g)
How many moles of oxygen (O2) will be formed?
o 2.5 moles
4.0 moles
3.0 moles
2.0 moles
4.5 moles

Respuesta :

Answer:

4.5 moles

Explanation:

From the equation, the mole ratio of KClO3: O2 = 2: 3

Which means, every 2 moles of KClO3 forms 3 moles of O2.

Let the no. of moles of O2 formed be y.

[tex]\frac{2}{3} = \frac{3.0}{y}[/tex]

2y = 3x3

2y = 9

y = 4.5 moles