Question

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

Answer 1

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

Answer 2

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

Step-by-step 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}}* 100`

`\%K=(117.3 g/mol)/(329.15 g/mol)* 100=35.54\%`

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