Question

What is the percent by mass of potassium in K3Fe(CN)6?

Answer 1

Answer:

The percentage of potassium in the given complex is 35.54 %.

Explanation:

Mass of potassium in $K_3Fe(CN)_6$ = 3 × 39.10 g mol=117.3 g/mol

Molar mass of $K_3Fe(CN)_6$ =329.15 g/mol

Percentage of potassium (K) in the the complex:

$\% K=\frac{\text{mass of potassium}}{\text{molar mass of complex}}\times 100$

$\%K=\frac{117.3 g/mol}{329.15 g/mol}\times 100=35.54\%$

The percentage of potassium in the given complex is 35.54 %.

Answer 2

The percent by mass of potassium in K3Fe(CN)6 is 35.62%.