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Determine the delta G associated with the dissociation of 5.0g of C76H52O46 at room temperature in 50mL of pH=7.55 buffered solution that has already had 2.5g C76H52O46 dissolved into it.
Use Henderson-Hassalbach equation. The pKa of Tris-HCl is 8.1. After you have added 1 N HCl to adjust the pH of the Tris solution to 8.1, what is the ratio (in mmols) of Tris to Tris-HCl in the resulting buffer solution?
Muriatic acid is a HCl solutin available in hardware stores. A 3.00-ml sample of muriatic acid required 15.44 ml of 2.04 M NaOH for complete neutralization
Which of the following statements are evidence that gases do not always behave ideally? Check all that apply. When two gases are mixed, they follow Dalton\'s law of partial pressures.
The amino acid glycine is often used for biochemical buffers. The amino group of glycing can exist in a protonated form or as a free base (pKa 9.6).
What is the density (in grams per liter) of a gas mixture that contains 26.0 % F_2 and 74.0 % He by volume at 743 mm Hg and 28.5 C?
What is the pH when 50.0mL of a 0.53M solution of CH3NH2 is titrated with 17.70mL of a 0.37M soltion of perchloric acid?
For each of the following salt solutions, indicate whether the solution will be acidic, basic or neutral. Then using data given below, calculate [OH-] or [H3O+] and pH for each solution.
When working NMR questions, solutions maunuals say that the peaks are 1.0 spaces long or 5.5 spaces long.
If 29.1 mL of 0.4 M NaOH is used to reach the endpoint when titrating 20.1 mL of acetic acid, what is the concentration of the acetic acid in moles/L
In the reaction below, 6.31 atm each of Br2 and I2 were placed into a 1.00 L flask and allowed to react: Br2(g) + I2(g) 2 IBr(g) Given that Kc = 80.8, calculate the equilibrium pressure of IBr.
What is the effect on the calculated concentration of the standard solution if the trials of the pure KHP samples are consistently over-titrated to a deeper magenta color?
calculate the wavelength of the photon emitted when an electron drops from 4d obital to a 2p orbital in a hydrogen atom using Rydberg constant as 1.097 x 10-2 pm-1 .
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