Chemistry, 08.11.2021 14:00, JadedylaneH6980
Why does the vapor pressure of a solution decrease when an ionic compound is added to it?
1) Most solutes have a positive heat of solvation, causing the temperature of the solution to decrease.
2)There are fewer solvent molecules at the surface, so fewer can vaporize and leave the solution.
3) The mole fraction of solvent is higher, causing a lower vapor pressure.
Answers: 1
Chemistry, 22.06.2019 19:20, johnkings140
For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)
Answers: 1
Chemistry, 23.06.2019 03:30, vaehcollier
If you need to add 27.50ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?
Answers: 1
Why does the vapor pressure of a solution decrease when an ionic compound is added to it?
1) Most...
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