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Science Clinic => Chemistry => Topic started by: TFauchery on Nov 18, 2019

Title: Calculate the mass of lactose, C12H22O11, contained in 500.0 mL of solution if the measured vapour ...
Post by: TFauchery on Nov 18, 2019

Question 1

Calculate the volume of solution that has a vapour pressure of 25.8 mbar and contains 200.3 g of galactose, C6H12O6, at a temperature of 22.0 °C. The vapour pressure of pure water at 22 °C is 26.40 mbar, the density of water is 1.00 g mL-1, and assume no change in volume occurs upon dissolution.
◦ 981 mL
◦ 769 mL
◦ 91.3 mL
◦ 200 mL
◦ 862 mL

Question 2

Calculate the mass of lactose, C12H22O11, contained in 500.0 mL of solution if the measured vapour pressure of the solution is 121.2 mbar at 50 °C. The vapour pressure of pure water at 50 °C is 123.3 mbar; assume no change in volume occurs upon dissolution.
◦ 280 g
◦ 118 g
◦ 165 g
◦ 94.6 g
◦ 239 g

Title: Calculate the mass of lactose, C12H22O11, contained in 500.0 mL of solution if the measured vapour ...
Post by: huda on Nov 18, 2019

Answer 1

862 mL

Answer 2

165 g

Title: Re: Calculate the mass of lactose, C12H22O11, contained in 500.0 mL of solution if the measured vapo
Post by: ptx123 on Mar 1, 2020

ty

Title: Re: Calculate the mass of lactose, C12H22O11, contained in 500.0 mL of solution if the measured vapo
Post by: Miranda Sandiego on Nov 21, 2021

thank you

Title: Re: Calculate the mass of lactose, C12H22O11, contained in 500.0 mL of solution if the measured vapo
Post by: Miranda Sandiego on Nov 23, 2021

thank you