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Part II. The Ka for hydrofluoric acid, HF, is 7.2 x 10-4. 1. Sketch a diagram of the general shape of the titration of 50.0 mL of 0.200 M HF vs. 0.100 M NaOH. Label the axes; location of the equivalence point; the region of buffering capacity; and the region in which [OH-] controls pH. 2. What is the pH of the solution at 0.00 mL of added base? 3. What is the pH when 50.0 mL of 0.100 M NaOH have been added? 4. What is the pH when 100.0 mL of 0.100 M NaOH have been added?
At 50°C the vapor pressure of ethanol is 0.30 atm, acetic acid is 0.08 atm, water is 0.12 atm, and acetone is 0.84 atm. A) Arrange these substances in order of increasing rates of evaporation.
a equimolar mixture of h2 and d2 effuses through an orifice at a certain temperature. calculate the composition in mole
Silicon Carbide is a hard substance used as an abrasive. it is prepared by heating SiO2 and carbon at high temperatures SiO2 + 3C = SiC + 2 CO determine the limiting and excess reactant.
What volume of ethylene glycol (C2H6O2), a nonelectrolyte, must be added to 19.0 L of water to produce an antifreeze solution with a freezing point of -34.0°C
Consider the following reaction. N2 + 3 H2 → 2 NH3 . 28.0 grams of N2 and 5.04 grams of H2 are reacted, producing 17.8 grams of NH3. What is the percent yield?
(a) reversibly, (b) against a constant external pressure equal to the final pressure of the gas, and (c) freely (against zero external pressure)
What is the concentration (in M) of the chloride ion when 16 mL of a 0.625 M solution of sodium chloride is combined with 17.3 mL of a 0.551 M solution of iron(III) chloride to a final volume of 56.5 mL
Water flowing through pipes of carbon steel must be kept at PH 5 or greater than limit corrosion if an 8.0 *10^3 Ib/hr water stream contains 10 ppm sulfuric acid and 0.015% acetic acid, how many pounds per hour of sodium acetate trihydrate
a strip of magnesium of mass 15g is dropped into a beaker of dilutenbsp hydrochloric acid. calculate the work done in j
The rate constant for the equation 2C2F4 --> C4F8 is 0.0438 M?1· s?1. We start with 0.142 mol C2F4 in a 5.00-liter container, with no C4F8 initially present. What will be the concentration of C2F4 after 1.00 hour
prior to engaging in this discussion please review chapters 6 and 9 read chapter 10 in the text and review any relevant
Outline a complet mechanistic sequence for the reaction of 2-bromoheptane with potassium 2-methyl-2-propoxide in 2-methyly-2-propanol solvent to form the three alkenes generated in the reaction
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