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0.25 mol of formic acid (HCO2H) is dissolved in enough water to make one liter of solution. The pH of that solution is 2.19. The Ka of formic acid is
A. 6.5 * 10^-3B.4.3 * 10^-4C.1.7 * 10^-4D. 5.3 * 10^-2E. 2.7 * 10^-2
Calculate the pH of the following solutions: 1.) 0.100 moles of HF and 0.120 moles of NaF in a 1.00 liter solution.--- 2.) a solution that has 0.10M NH4NO3 and 0.10 M NH3.--- 3.)0.100 moles of HF and 0.200 moles of NaCN in 1.00 liter solution.
The indicator propyl red has Ka = 3.3 × 10-6. What would be the approximate pH range over which it would change color?
Two unknowns X and Y both having molecular formulas C4H8O, give the following results with four chemical tests. Propose structures for X and Y consistent with this infomation, Bromine Na Metal Chromic Acid Lucas Reagent
How many moles of H2SO4 must be present to react completely with the NaOH delivered from the buret.
The complete combustion of pentane yields carbon dioxide and water. When the equation C5H12(l) + O2(g) ? CO2(g) + H2O(l) is balanced, the ratio of the coefficient of CO2 to the coefficient of O2 is
a quanity of gas exerts a pressure of 98.6 kpa at a tempature of 22 degrees celcius. If the volume remains unchanged, what pressure will it exert at -8 degrees celcius
If 200 ml of gas at 400 torr is transferred to a 20.0 ml cotnainer. What will the new pressure be if the temperature is kept constant?
How many moles of AlCl3 can be produced by letting 918 grams of HCl react?
Find the vapor pressure of a solution that contains 218 g glucose in 460.0 mL of water at 30 degrees Celcius.
How many moles of O2 are needed to burn 1.05 mol of C8H18
There are four cadmium atoms and four tellurium atoms per unit cell. How many of each type of atom are there in a cubic crystal with an edge length of 5.00 nm?
A given mass of radium is over a million times more radioactive than the same mass of uranium
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