Which of the following aqueous solutions are good buffer systems? O 0.21 M nitric acid + 0.25 M sodium nitrate O 0.21 M hydrofluoric acid + 0.13 M potassium fluoride O 0.29 M ammonium bromide + 0.36 M ammonia O 0.34 M nitrous acid + 0.27 M sodium nitrite O 0.19 M potassium hypochlorite +0.20 M hypochlorous acid

Q: Which of the following aqueous solutions are good buffer systems? O0.19 M hydrocyanic acid + 0.16 M…

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Q: Which of the following aqueous solutions are good buffer systems? 0.11 M acetic acid + 0.15 M nitric…

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Q: An aqueous solution contains 0.28 M potassium cyanide. One liter of this solution could be converted…

A: Given-> [KCN] = 0.28 M Volume = 1 L

Q: Shown below is the titration curve for phosphoric acid. At what pH is it entirely in the PO43 form?…

A: Since you have posted multiple questions, we are entitled to answer the one only. 5) The titration…

Q: Which of the following aqueous solutions are good buffer systems? . 0.26 M nitric acid + 0.16 M…

A: Buffers are formed by weak acid and its salt, weak base and its salt or salt or weak acid and weak…

Q: An aqueous solution contains 0.25 M hydrofluoric acid. One Liter of this solution could be converted…

A:

Q: A unsaturated aqueous so

A: Needed formulas are                         1. Ca(OH)2    -->  Ca+2   + 2 OH-       Ksp =…

Q: Which of the following aqueous solutions are good buffer systems? | 0.35 M ammonia + 0.30 M sodium…

A: Buffer solutions are the solutions containing a mixture of weak acid and its conjugate base or a…

Q: The table indicates how pH indicators change color based on the pH of the solutions that you put…

A: Given : pH range in which colour changes for bromothymol blue is 6.0 - 7.6. The colour change of…

Q: Which of the following aqueous solutions are good buffer systems? 0.26 M hydrobromic acid + 0.21 M…

A:

Q: A 100.0 mL sample of a 0.100 M solution of boric acid (H3BO3) is combined with a 100.0 mL sample of…

A: On addition of HCl concentration of H3O+ ions increases which causes the equilibrium to shift in…

Q: Why isn't using a volumetric titration to determine the pH of ocean water useful? and why is using…

A:

Q: Which of the following aqueous solutions are good buffer systems? O 0.38 M barium iodide + 0.27 M…

A: Buffer solution formed by combination of weak acid or base with salt of weak acid or base…

Q: the reaction of a strong acid with a strong base produces a salt and another product what is the…

A: We need to determine the products of reaction between strong acid and strong base.

Q: Which of the following aqueous solutions are good buffer systems? O 0.13 M hydrocyanic acid + 0.16 M…

A: The question is based on the concept of buffer solution.   A buffer is a solution which resist any…

Q: If  solid CaCl2  is added to a saturated solution of Ca(OH)2 which of the following is correct.…

A: When CaCl2 added to the saturated solution of Ca(OH)2 ,  the concentration of OH- ions decreases due…

Q: Which of the following aqueous solutions are good buffer systems? 0.26 M ammonia + 0.37 M calcium…

A:

Q: Determine if the following solids will increase decrease or not affect the solutions pH when…

A: If strong acid and weak base is formed then solution become acidic and pH decreases.

Q: Which of the following aqueous solutions are good buffer systems? 0 0.39 M potassium perchlorate…

A: A buffer solution is defined as when a weak acid is added to the conjugate base of the weak acid, or…

Q: A solution contains 0.220 M Pb2+ and 0.49 M Al3+. Calculate the pH range that would allow Al(OH)3 to…

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Q: Which of the following aqueous solutions are good buffer systems? O 0.22 M perchloric acid +0.24 M…

A:

Q: A 25.00 mL sample of magnesium hydroxide solution is titrated with 0.00500 M HCl and 2 drops of…

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Q: Which of the following aqueous solutions are good buffer systems? 0.15 M calcium hydroxide + 0.26 M…

A: The following aqueous solutions are good buffer systems will be:

Q: Which of the following aqueous solutions are good buffer systems? O 0.22 M hydroiodic acid + 0.23 M…

A: Buffer solution is solution in which weak acid or weak base present with their conjugate acid or…

Q: Which of the following aqueous solutions are good buffer systems? O 0.17 M acetic acid + 0.21 M…

A: The question is based on the concept of buffer solution.   A buffer is a solution which resist any…

Q: Write the units for the solubility product of: Silver bromide Lead (II) iodide Bismuth (III) sulfide

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Q: Solid ammonium chloride is slowly added to 125 mL of a 0.207 M silver fluoride solution until the…

A: Given, 125 mL of 0.207 M silver fluoride solution. To this Solid ammonium chloride is slowly added…

Q: scientist is investigating the solubility of two polyatomic ions, oxalate (C2O2−4C2⁢O42−) and…

A:

Q: Which of the following aqueous solutions are good buffer systems? 0.30 M ammonia- 0.39 M ammonium…

A: The buffer system is a solution that resists the change in pH when acids or bases are added. This…

Q: Which of the following aqueous solutions are good buffer systems? O 0.27 M ammonium bromide + 0.37 M…

A: A buffer solution is a solution that changes pH only slightly when small amounts of a strong acid or…

Q: Consider the reaction: 2 SO2 (g) + O2(g) ⇄ 2 SO3(g); ΔHo = -198.2 kJ/mole Predict the shift of the…

A: Since you have posted multiple questions, we will solve only one question for you. To get the…

Q: original buffer solution has a pH of 4.76 diluted HCl solution and original buffer solution has a…

A: Given: pH of original buffer solution = 4.76 pH of diluted HCl solution and original buffer solution…

Q: Which of the following aqueous solutions are good buffer systems? 0.10 M nitrous acid + 0.13 M…

A: A good buffercalled as  relatively equal concentrations of a weak acid and its conjugate base.

Q: Which of the following aqueous solutions are good buffer systems? O0.13 M hypochlorous acid + 0.12 M…

A: Option D is the correct choice among the given buffers.  A buffer solution is one which can resist…

Q: Which of the following aqueous solutions are good buffer systems? (more than one answer maybe…

A: Buffer solution is the solution that has the ability to resist in change of pH when a small amount…

Q: An aqueous solution contalns 0.26 M hypochlorous acid. One Liter of this solutlon could be converted…

A: A buffer solution is an aqueous solution consists of weak acid and it's conjugate base or weak base…

Q: An aqueous solution contains 0.32 M potassium fluoride. One lite

A: We have to tell which option is correct from given choices of options by telling which chemical can…

Q: Which of the following aqueous solutions are good buffer systems? U0.16 M sodium hydroxide +0.21 M…

A: Using concept of buffer.

Q: Which of the following aqueous solutions are good buffer systems?   Question 7 options:   0.16 M…

A: Buffer solutions are those solutions which resist in change in their pH when small amounts of acids…

Q: Which of the following aqueous solutions are good buffer systems? O 0.36 M hydrofluoric acid + 0.23…

A: A buffer system can be made from a weak acid or base with its conjugate base or acid respectively.

Q: Which of the following aqueous solutions are good buffer systems? | 0.20 M hydrofluoric acid + 0.13…

A: A buffer is a solution which resist the change in pH. A good buffer is made from the weak acid and…

Q: Describe buffer solutions in terms of acid-base equilibria. Give an example. How can you overwhelm…

A: A buffer solution is one which can resist change in its pH on the addition of an acid or a…

Q: Which of the following aqueous solutions are good buffer systems? 0.19 M sodium hydroxide + 0.21 M…

A: The following aqueous solutions are good buffer systems will be:

Q: Which of the following aqueous solutions are good buffer systems? O 0.33 M ammonia + 0.39 M sodium…

A:

Q: Cu2+(aq) + H2O(l) ⇌ CuOH+(aq) + H+(aq)   Keq = 1.2 x 10−8 A 1.00 M solution of copper(II) nitrate…

A:

Q: Which of the following aqueous solutions are good buffer systems? U0.36 M barium iodide + 0.29 M…

A: Buffer solution are those which resist any significant change in pH if any strong acid or base is…

Q: A water sample is believed to have Ca^2+ and Mg^2+ ions. A student is selected to try precipitate…

A: Note that the mentioned cations are precipitated using NaOH and not NaH solution. So, correction:…

Q: NH4

A: Buffer range is pKb +1 to pKb - 1  Highest Buffer capacity : at pKb  According to the Hinderson…

Q: An aqueous solution contains 0.29 M ammonia. One liter of this solution could be converted into a…

A:

Q: Which of the following aqueous solutions are good buffer systems? O 0.29 M nitric acid + 0.24 M…

A: A good buffer consist of: weak acid + conjugate base salt Weak base + conjugate acid salt

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.