?

SAT® Subject Test in Chemistry

Free Version

Upgrade subject to access all content

Difficult

Percent Yield Oxidation Reaction

SATCHM-T8PVEV

58.93 g of $Co$ was allowed to fully oxidize as shown below:

$$4Co + 3O_2→ 2Co_2O_3$$

70.50 g of $Co_2O_3$ was collected after the reaction was completed.

Calculate the percent yield.

A

$75\%$

B

$80\%$

C

$85\%$

D

$90\%$

E

$95\%$