A semipermeable membrane separates two aqueous solutions at 20 ∘ C. For each of the cases, determine the direction, if any, of the net flow of water. Assume 100% dissociation for electrolytes, meaning ion pairing can be ignored. Assume 100% dissociation for electrolytes.

Solution A: 0.10M NaCl(aq) Solution B: 0.10M KBr (aq)
Solution A: 0.10M Al(NO3)3 solution B: 0.20M NaNO3
Solution A: 0.10M CaCl2 Solution B: 0.50M CaCl2

Which group has a:

a. net flow towards solution A
b. net flow towards solution B
c. no net flow.

An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide

Agas occupies 475 cm^3 at 313k. find its volume at 367k. you must show all of your work to receive credit. be sure to identify which of the gas laws you will be using

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.