Physical Chemistry Answers

19.5g CH3FCOOH is dissolved in 500g of water the depression in the freezing point observed is 1.0k calculate van't hoff factor and dissociation constant of the acid.

19.5g CH3COOH is dissolved in 500g of water the depression in the freezing point observed is 1.0k calculate van't hoff factor and dissociation constant of the acid.

calculate the depression of freezing point of water when 10g CH3COOH is dissolved in 250g ( Ka= 1.4×10^-3 K 1=1.86 k kg mol^-1).

vapor pressure of water at 293k is 17.535 mm hg.calculate the vapor pressure of water at 293k when 25g of glucose is dissolved in 450g of water.

identify the labeled parts in the figure.



i. Which of the labeled parts is a chemical symbol?
ii. Which of the labeled parts is a coefficient?
iii. Which of the labeled parts is the number of atoms of the element?
iv. Which of the labeled parts indicates that only one atom of the element is present in the substance?

A nucleus undergoes fission and the following nuclei are observed afterwards: Phosphorus-32, Xenon-136, Chlorine-39, and 2 neutrons. What was the original nucleus?

Explain as completely as possible what effect the higher electronegativity of bromine has on the electrons and on the charges of the molecule.

Difine osmosis and Osmotic pressure.

define the term van't hoff factor.

15. A pot contains 15g of water at 25°C. If this water absorbs 489.5J of energy, what will its final temperature be? Will it be boiling?