<u>Answer:</u> The mole fraction of KCl in the solution is 0.044
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
.....(1)
Given mass of KCl = 43.0 g
Molar mass of KCl = 74.5 g/mol
Putting values in equation 1, we get:
Given mass of water = 225 g
Molar mass of water = 18 g/mol
Putting values in equation 1, we get:
To calculate the mole fraction of a substance, we use the equation:
Moles of KCl = 0.58 moles
Moles of water = 12.5 moles
Putting values in above equation:
Hence, the mole fraction of KCl in the solution is 0.044