3moles KI in 500 g of H2O equals what molality?
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To determine the molality of KI in a solution, we need to start by understanding the definition of molality.
Molality (m) is defined as the number of moles of solute (in this case, KI) per kilogram of solvent (in this case, H2O).
Given:
Number of moles of KI = 3 moles
Mass of water (solvent) = 500 g = 0.5 kg
To calculate molality, we use the formula:
m = (moles of solute) / (mass of solvent in kg)
Using this formula, we can calculate the molality of KI in the solution of 500 g of H2O:
m = 3 moles / 0.5 kg
m = 6 mol/kg
Therefore, the molality of 3 moles of KI in 500 g of H2O is 6 mol/kg.