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A 1.00-gram sample of acetic acid (HOAc MW = 60.05 g/mole, Ka = 1.8 x 10-5) was contaminated with some sodium chloride (NaCl). The whole sample was dissolved in 25.00mL of water as well as this solution was titrated with 35.00mL of 0.1000 M NaOH to reach the endpoint.
a. Compute the purity of acetic acid present in the sample in weight%. Define what was the pH of the solution after addition of 15.00mL of 0.1000 M NaOH
Explain what was the pH of the solution at the equivalence point?
Integrals for some of the resonances in the 1H NMR spectrum are higher than they should be due to the shear number of hydrogens in this compound
What is the molarity of a solution made by dissolving 5.69 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.)
Which mixture, 1 (a mixture of benzene toluene and p-xylene) or 2 (a mixture of o-,m-, and p-xylene, and ethyl benzene) gave better separation on the Gas Chromography and why
Calculate the number of moles of CO 2
You have just returned from a twenty five mile jog around the track at the Student Recreational center. As sweat drips from your chin, you contemplate the concept of fluid replacement, but can't find a bottle of Gatorade in your frig
200.0 mL flask containing 1.03 mg and 0.56 mg O2 I have a 15 * C to calculate the partial pressures of oxygen and helium in a flask. which is the total pressure
A nutritional calorie (Cal) is equal to 1 Kilocalories (Kcal). A package of crackers has 115 nutritional calories
What is the pH change of a 0.300 M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.140 M with no change in volume?
The melting point of water is 0.000C at 1 atmosphere. If 11.64 grams of chromium(II) acetate, (170.1 g/mol), are dissolved in 287.2 grams of water .what is the molarity?
A 486 mL sample of water was cooled from 50.0°C to 10.0°C. Assuming a specific heat of 4.184 J/K g and a density of 1.00 g/mL, find the amount of heat transferred from the water to the surroundings.
Calculate Eo, E, and deltaG for the following cell reactions Mg (s) + Sn2+ (aq) Mg2+(aq) + Sn(s) [Mg2+]= 0.045 M, [Sn2+] = 0.035 M
State the chemical reaction that took place in the patient's body.
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