What is the molality of a solution in which 15 g of #I_2# is dissolved in 500.0 g of alcohol?

Answer 1

The molality is #=0.236mo l e s kg^-1#

The number of moles of iodine is #n=15/126.9=0.118 mol es #
The mass of alcohol is #=500/1000=0.5kg#

The molality is

#p=n_(solute)/m_(solvent)=0.118/0.5=0.236mo l e s kg^-1#
Sign up to view the whole answer

By signing up, you agree to our Terms of Service and Privacy Policy

Sign up with email
Answer 2

To find the molality of the solution, first, calculate the moles of solute (I2) using its molar mass. Then, divide the moles of solute by the mass of the solvent (alcohol) in kilograms. Finally, express the result in mol/kg.

Molar mass of I2 = 2 × atomic mass of iodine = 2 × 126.90 g/mol = 253.80 g/mol

Number of moles of I2 = Mass of I2 / Molar mass of I2 = 15 g / 253.80 g/mol ≈ 0.0592 mol

Mass of alcohol = 500.0 g = 0.500 kg

Molality (m) = Moles of solute / Mass of solvent (in kg) = 0.0592 mol / 0.500 kg ≈ 0.1184 mol/kg

Sign up to view the whole answer

By signing up, you agree to our Terms of Service and Privacy Policy

Sign up with email
Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

Not the question you need?

Drag image here or click to upload

Or press Ctrl + V to paste
Answer Background
HIX Tutor
Solve ANY homework problem with a smart AI
  • 98% accuracy study help
  • Covers math, physics, chemistry, biology, and more
  • Step-by-step, in-depth guides
  • Readily available 24/7