When a 21.5 mL sample of a 0.402 M aqueous hypochlorous acid solution is titrated with a 0.303 M aqueous barium hydroxide solution, what is the pH after 21.4 mL of barium hydroxide have been added? pH=
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- A 25.00 mL sample of 0.320 M LIOH is titrated with 0.750 M HNO3 at 25 °C. Calculate the initial pH before any titrant is added. pH = Calculate the pH of the solution after 5.00 mL of the titrant is added. pH =A 500 mL sample of a 0.100 M formate buffer, pH 3.75, is treated with 5 mL of 1.00 M KOH. What is the pH following this addition?439 mL of 0.270 M hydrochloric acid is exactly neutralized with 0.920 M potassium hydroxide solution. What volume of base solution is required?
- If 10g of salt was mixed in 1L water. What percent solution will this be.50X TBE is 87 mM Tris-borate and 4 mM EDTA at pH 8.3. What is the molarity of each of the chemicals in 1X TBE buffer?If a pharmacist needs to prepare a bacterial suspension with a concentration of 2.4x10^2 cfu using 1 mL of 2.4 x 10^4 bacterial suspension, what size of volumetric flask will she/he be needing?
- If skin cleaning solution is to be diluted 1 teaspoon to 64 ounces of water, how much water would need to be added to a container containing 1/4 teaspoon of skin cleaning solution?Calculate the followings: The pH of the final solution after adding 300 ml of 40 mM NaOH to 600 ml of 350 mM NaOH.You need to prepare an acetate buffer of pH 5.43 from a 0.621 M acetic acid solution and a 2.95 M KOH solution. If you have 730 mL of the acetic acid solution, how many milliliters of the KOH solution do you need to add to make a buffer of pH 5.43? The pKa of acetic acid is 4.76. Be sure to use appropriate significant figures.
- You need to prepare 1L of a 5×TE stock solution (1×TE buffer:10mM Tris,1mM EDTA).How much of Tris you need? How many ml of the 0.5 EDTA stock solution do you need?80.00 mL of 0.350 M benzoic acid (K = 6.4×105) is titrated by 0.350 M NaOH. Calculate the pH of the acid solution before any titrant is added. PH Calculate the pH after 58.9 mL of 0.350 M NaOH is added to 80.00 mL of 0.350 M benzoic acid. pH = Calculate the pH after 80.00 mL of 0.350 M NaOH is added to 80.00 mL of 0.350 M benzoic ad pH = Calculate the pH after 110 mL of 0.350 M NaOH is added to 80.00 mL of 0.350 M benzoic acid. pH=A buffer solution is composed of 1.00 mol of acid and 1.75 mol of the conjugate base. If the pKa of the acid is 3.60, what is the pH of the buffer? pH=