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A buffer is prepared by mixing 500 mL of 1.50 M Ch3COOH with 250 mL of 1.00 M CH3COONa. What is the pH of the buffer system after the formation of 0.15 moles of OH- from a secondary reaction with the buffer? (Ka for acetic acid = 1.7 x 10^-5)
a. 4.59b. 0.70c. 3.80d. 13.30e. 2.19
Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 100.0 mL of 0.20 M NH3.
Balance the following formula unit equation. What is the sum of all of the coefficients. (Do not forget coefficients of one.) KMnO4 + H2O2 + H2SO4 ® O2 + MnSO4 + K2SO4 + H2O
What is the anticpated rate in grams per minute at which ethanol will be formed at a rate of 100 L per minute at 573 K and 69.08 atm
Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution containing 0.070 mol lysine (HL), 0.055 mol aspartic acid (H2A), and 0.0080 mol NaOH. Consider just acid-base chemistry.
What is the amount of volume of the solvent you need to extract 65g of the solute in one extraction from the original 100g dissolved in 206mL water?
The contents of the closed boxes in each of the depictions below represents a system, and the arrows show the changes to the system during some process. Which of these processes is endothermic? 1.The first diagram has a box with 2 arrows heat(q) a..
Dry ice (solid ) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole,
A 14 mL sample of a solution of AlBr3 was diluted with water to 56 mL. A 25 mL sample of the dilute solution was found to contain 2.31 M Br-. What was the concentration of AlBr3 in the original undiluted solution
when 2.45 g of an unknown weak acid ha with a molar mass of 85.0g mol is dissolved in 250.0g of water the freezing
What is the pH of a solution formed by adding 50.20mL of 0.1153M NaOH to 505.8mL of 0.01357M aspartic acid. the 0.01357M refers to the concentration of the neutral form of the amino acid before the addition of NaOH
When one mole of benzene (C6H6) undergoes complete combustion, 3,170 kJ are released. Calculate the combustion energy of 0.350 kg of benzene?
Buffer solution Problem to determine pH, Determine the pH after the addition of 10.0ml of 0.1M NaOH to 100.00ml of this buffer. An aqueous solution of 100.0ml 0.100M NaCl is titrated with 0.100M AgNO3 (AgCl Ksp= 1.0x10^-10) pAg=-log[Ag+]
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