If 250 g of calcium chlorate decomposes into calcium chloride and oxygen, what mass of oxygen would be produced?

____ → ____ + ____

Respuesta :

Answer:

115.97 grams

Explanation:

The reaction ensuing is expressed as:

[tex]Ca(ClO_3)_2->CaCl_2+3O_2[/tex]

-The molar mass of [tex]Ca(ClO_3)_2[/tex] is given as [tex]206.98\ gmol^{-1}[/tex]

#Calculate the moles of [tex]Ca(ClO_3)_2[/tex] in the reaction:

[tex]Ca(ClO_3)_2_m=250/106.98\\\\=1.208 \ mol[/tex]

#The ratio of calcium chlorate to oxygen is 1:3,

[tex]O_2 \ Moles=1.208\times 3\\\\=3.624 \ mol[/tex]

#Given the molar mass of oxygen per mole is 32 g, it's weight in the reaction is calculated as:

[tex]mass=3.624\times 32\\\\=115.97\ grams[/tex]

Hence, the mass of oxygen produced is 115.97 grams