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Chapter 3: Q3.19P (page 131)

Question: Calculate each of the following:

a. Mass % of I in strontium periodate

b. Mass % of Mn in potassium permanganate

Short Answer

Expert verified

a. Mass % of I in strontium periodate is 54.07%

b. Mass % of Mn in potassium permanganate is 54.07%

Step by step solution

01

Definition of Mass 

A property that reflects the quantity of matter within a sample is defined as mass

02

Calculations

a. The molar mass of strontium periodate is 469.42 gmol

Mass % of I =2​ mol  I126.90 g  Imol  I469.42 g Sr(IO4)2×100

Mass % of I is 54.07%

b. The molar mass of strontium periodate is 158.04 gmol

Mass % of Mn =1​ mol  Mn54.94 g  Mnmol  Mn158.04 g KMnO4×100

Mass % of Mn is 34.76%

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