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Studentka2010 [4]
2 years ago
10

Hydrogen peroxide can be prepared by the reaction of barium peroxide with sulfuric acid according to the reaction BaO2(s)+H2SO4(

aq)⟶BaSO4(s)+H2O2(aq) How many milliliters of 3.75 M H2SO4(aq) are needed to react completely with 53.5 g BaO2(s)?
Chemistry
2 answers:
Kryger [21]2 years ago
7 0

Answer:

84.43 milliliters of 3.75 M Sulfuric acid are needed.

Explanation:

Moles of barium oxide = \frac{53.5 g}{169 g/mol}=0.3166 mol

BaO_2(s)+H_2SO_4(aq)\rightarrow BaSO_4(s)+H_2O_2(aq)

According to reaction, 1 mole of barium oxide reacts with 1 mole of sulfuric acid.

Then 0.3166 moles of barium oxide will react with:

\frac{1}{1}\times 0.3166 mol=0.3166 mol of sulfuric acid.

Molarity=\frac{\text{Moles of compound}}{V(L)}

Where: V = Volume of the solution in Liters

Moles of sulfuric acid = 0.3166 mol

Volume of the sulfuric acid solution = V = ?

Molarity of sulfuric acid = 3.75 M

3.75 m=\frac{0.3166 mol}{V}

V=\frac{0.3166 mol}{3.75 M}=0.08443 L

0.08443 L = 84.43 mL (1 L = 1000 mL)

84.43 milliliters of 3.75 M Sulfuric acid are needed.

Vesna [10]2 years ago
6 0

Answer:

VH2SO4 = 145.3 mL

Explanation:

Mw BaO2 = 169.33 g/mol

⇒ mol BaO2 = 53.5g * ( mol BaO2 / 169.33 g BaO2) = 0.545 mol BaO2

⇒according to the reaction:

mol BaO2 = mol H2SO4 = 0.545 mol

⇒ V H2SO4 = 0.545 mol H2SO4 * ( L H2SO4 / 3.75 mol H2SO4 )

⇒V H2SO4 = 0.1453 L (145.3 mL)

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