Find the osmolality of 400 mL of 8% galactose solution, to which 5.85g of sodium is added
Find the osmolality of 400 mL of 8% galactose solution, to which 5.85g of sodium is...
A 75 mL solution of .400 M chlorous acid is titrated with a .125 M solution of sodium hydroxide. What is the pH of the solution after 380 mL of the sodium hydroxide solution has been added? Ka for chlorous acid is 1.1 x 10-2. (hint: your answer should contain four significant figures)
498 mL of a 0.21 M sodium hydroxide solution is added to 158 mL of a 0.61 M rubidium hydroxide solution. Calculate the pOH of the resulting solution.
What is the new expected pH level for each question. 20 ml of sodium hydroxide solution added 25 ml of sodium hydroxide solution added Bonus/ Extra credit: Determine the pH of the resulting solution that is formed when 20.0 ml of 0.05 Molar NaOH is added to 10.0 ml 0.20 molar acetic acid/sodium acetate solution. (Hint: a 0.20 molar acetic acid/sodium acetate means that the buffer contains 0.20 molar acetic acid and 0.20 molar sodium acetate solutions combined).
If 400 mL of some Pb(NO3)2 solution is mixed with 400 mL of 1.10 x 10-2 M NaCl solution, what is the maximum concentration of the Pb(NO3)2 solution added if no solid PbCl2 forms? (Assume Ksp = 2.00 x 10-5 M at this temperature.) Enter the concentration in M. Submit Answer Tries 0/99
Given: 50mL of solution diethyl ether solution containing 1.00g each of benzoic acid, phenol and aniline,50 mL of sodium bicarbonate solution, 50 ml of sodium hydroxide solution, sodium sulfate and HCl. 1. Which layer in the separatory funnel (top or bottom layer) is the organic layer during an extraction process? 2. Given that sodium bicarbonate and sodium hydroxide solution are 5% by weight, what would be the volume of 1M HCl needed to be added for acidification to crystalize the...
Calculate the pH of a solution made by adding 25.0 g of sodium formate, NaHCOO, to 400 mL of 0.64 M formic acid, HCOOH Answer:
How many grams of sodium phosphate, Na3PO4, must be dissolved to prepare 400. mL of a 0.182 M aqueous solution of the salt?
3. (5 pts) Find mass of sodium formate to be added to 25.0 mL of 0.25 M solution of formic acid so that after dilution to 100.0 mL the resulting solution has pH = 4.0. The acid dissociation constant of formic acid is 1.8x10".
Calculate the sodium ion (Na^+) concentration when 30.0 mL of 0.25 sodium carbonate, Na_2 CO_3, solution is added to 50.0 mL of 0.030 M sodium chloride, NaCl, solution. a. 0.103 M b. 0.206 M c. 0.1 13 M d. 0.225 M e. None of the above
A buffer solution is prepared by dissolving 1.000 g of sodium acetate (CH3COONa) into 100.00 mL of a 0.100 M solution of acetic acid. Then 2.00 mL of a 1.00 M solution of hydrochloric acid is added to the acetic acid/sodium acetate buffer solution. The Ka of acetic acid is 1.8 × 10−5. What is the pH of HCl?