Q3.19P - Chemistry: Molecular Nature Of Matter And Change

Question

^{Question: Calculate each of the following:}

^{a. Mass % of I in strontium periodate}

^{b. Mass % of Mn in potassium permanganate}

Step-by-Step Solution

Answer

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

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

Step 1: Definition of Mass

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

Step 2: Calculations

a. The molar mass of strontium periodate is  $469.42\frac{g}{mol}$

Mass  % of I  $=\frac{2\text{\hspace{0.17em}}molI\left(\frac{126.90gI}{molI}\right)}{469.42gSr{\left(I{O}_4\right)}_2}\times 100$

Mass  % of I is 54.07%

b. The molar mass of strontium periodate is  $158.04\frac{g}{mol}$

Mass % of Mn  $=\frac{1\text{\hspace{0.17em}}molMn\left(\frac{54.94gMn}{molMn}\right)}{158.04gKMn{O}_4}\times 100$

Mass % of Mn is 34.76%