Consider a buffer made by adding 132.8 g of NaC,H;O2 to 300.0 mL of 1.31 M HC,H;O2 (Ka = 6.3 x 105) %3D What is the pH of the buffer after 0.250 mol of OH have been added?

Q: A buffer is created by dissolving 0.303 moles of lactic acid and 0.197 moles of sodium lactate in…

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Q: 3.2. Calculate the mass of NH&CI that should be dissolved in 525.00 mL of 0.1531 M NH3 (Ko = 1.8 x…

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Q: You had prepared 100.0 mL of Buffer C, in which you mixed 1.35 g of sodium benzoate, C7H5O2 with…

A: According to Henderson- Hassleblach equation we calculate the pH of a buffer solution. pH = pKa +…

Q: A 0.3654 g portion of pure formic acid (CH2O2, FW=46.03 g/mol, Ka=1.77 x 10-4) is dissolved in 50.00…

A: Given that, Mass of formic acid = 0.3654 g Molecular mass of formic acid = 46.03 g/mol Volume of…

Q: What is the pH of the buffer solution that contains 1.6 g of NH4Cl in 250 mL of 0.060 M NH3? Is the…

A: pH of a basic buffer can be calculated using Henderson-Hasselbach equation: pH=14-(pKb+logB+BOH)

Q: An environmental chemist needs a carbonate buffer of pH 10.00 to study the effects of the acid rain…

A: Answer - Henderson - Hasselbach equation - According to Henderson-Hasselbach equation, when the…

Q: Consider the titration of 20.0 mL of a sample of 0.105 M HC2H3O2 with 0.125M NaOH. (Ka = 1.8 x 10-5)…

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Q: A 45.0-mL sample of 0.66 M HA (Ka = 0.00084) is titrated with 0.67 M NAOH. What is the pH of %3D the…

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Q: What is the pH of a buffer that is 0.200 M H2PO4−and 0.250 M HPO42− at 25°C?

A: The buffer solution is the solution that resists changing the pH of the solution if a small amount…

Q: 10mL of a 0.28 M solution of acetic acid, Ka = 1.8 x 10-5,  is added to a 20mL of 0.18 M solution of…

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Q: 10.00 mL of 0.2357 M acetic acid {Ka = 1.80 xx 10^(-5)} is titrated with 0.1401 M NaOH. a) What is…

A: Given: The volume of acetic acid is 10 mL. The volume of NaOH is 8.240 mL. The molarity of acetic…

Q: Consider the reaction of a 20.0 mL of 0.220 M C̟H̟NHCI (Ka = 5.9 x 10*) with 12.0 mL of 0.241 M…

A: Given molarity of C5H5NHCl or C5H5NH+ = 0.220 M  Volume of C5H5NHCl solution = 20.0 mL = 0.020 L…

Q: What is the pH of  a buffer containing 395 mmoles of HCOOH (Ka = 1.8 x 10-4) and 380 mmoles of KHCOO…

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Q: What is the pH of a buffer made from 0.580 mol of CH;NH2 (Kb = 4.4 x 10-4) and 0.220 mol of CH3NH31?

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Q: What is the pH of a buffer made from 0.130 mol of HCNO (Ka=3.5*10^-4) and 0.410 mol of NaCNO in 2.0…

A: pH of the solution  = 3.96

Q: Consider the titration of 25.0 mL 0.175 M CH3COOH (Ka 1.8 X 105) with 0.105 M aqueous NaOH. Write…

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Q: What is the Equivalence Point pH of a titration involving 0.4500 M CH3COOH (ka =1.8 x 10-5) and…

A: Answer: pH at eqivalence point = 9.4

Q: You are given a 40.0mL sample of 0.80M CH3CH2COOH is titrated with 0.30M NaOH.  What is the pH of…

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Q: What change in pH will occur when 0.050 mmol of HOAc (Ka= 1.78 x 10^-5) is added to 100.0 ml of a…

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Q: Consider the titration of a 40.0 mL of 0.153 M weak acid HA (Ka = 2.7 x 10-8) with 0.100 M LİOH.…

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Q: What is the pH of a buffer made from 0.580 mol of CH,NH, (Kb = 4.4 x 10-4) and 0.250 mol of CH;NH,1?

A: ans: PH  of solution is 11  Explanation : given:  [ch3nh2]= 0.580 mol , [ch3nh3I]= 0.250 mol ,and…

Q: What volume of 0.200 M HCl must be added to 250.0 mL of 0.300 M sodium mandelate to produce a buffer…

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Q: How will you prepare 500 ml of 0.750 M citrate buffer with a pH of 4.25 from solid citric acid…

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Q: What is the pH of a buffer solution, prepared by mixing 30.0 mL of 3.00 M ammonia, NH3 (K= 1.80 x…

A: A buffer is a solution which resist any change in pH on adding a small amount of acid or base .   it…

Q: The Ka of Benzoic acid (C6H5COOH) is 6.3 x 10-5. A 0.72 M C6H5COOH of 40.0 mL is titrated with 0.48…

A: Option  C The answer for (1) 30.0 ml and the answer for (2) 60.0 ml

Q: How will you prepare 500 ml of 0.750 M citrate buffer with pH of 4.25 from solid citric acid…

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Q: Consider a buffer made by adding 132.8 g of NaC,H5O2 to 300.0 mL of 1.31 M HC,H5O2 (Ka = 6.3 x 10-5)…

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Q: Consider a buffer made by adding 132.8 g of NaC-H;O2 to 300.0 mL of 1.31 M HC,H;O2 (Ka = 6.3 x 10-5)…

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Q: What volume of 1.35 M HCl must be added to 0.283 L of 0.323 M dimethylamine to produce a buffer with…

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Q: You have a 258.3 mL sample of 1.659 M HA (Ka = 5.97⋅10−75.97⋅10-7).  Calculate the pH of the best…

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Q: What is the component concentration ratio, [CH₃COO⁻]/[CH₃COOH], of a buffer that has a pH of 4.39…

A: The dissociation of weak acid takes place as follows: HA+H2Ol⇌H3O++A- The expression for the…

Q: An acetic acid buffer contains 0.6 M CH3COOH and 0.6 M CH3COONA. (CH3COOH has a K, 1.76 x 105.) What…

A: Given- Concentration of CH3COOH= 0.6M Concentration of CH3COONa= 0.6M Ka of CH3COOH=1.76 ×10 -5…

Q: (3) How will you prepare 500 ml of 0.750 M citrate buffer with pH of 4.25 from solid citric acid…

A: Molarity of buffer to be prepared [AH] = 0.750 M Volume of buffer solution = 500 ml pH of buffer…

Q: What is the pH of a buffer that contains 0.250 mol of CH3NH2 and 0.450 mole of CH3NH3CI? Kb for…

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Q: What are the [H₃O⁺] and the pH of a propanoic acid–propanoate buffer that consists of 0.35 M…

A: First of all write the  equation for given compound: CH3CH2COONa→CH3CH2COO-+Na+ CH3CH2OOH=0.15…

Q: If 50.00 ml of 1.00M HC,H,O; (K, = 1.8 x 10*) is titrated with 1.00 M NaOH. What is the pH of the…

A: Volume of CH3COOH = 50ml Concentration of CH3COOH = 1M Concentration of NaOH = 1M Ka = 1.8×10-5 We…

Q: Solve this?

A: pH = 9.2 pH + pOH = 14 pOH = 14-9.2 = 4.8

Q: What mass of NaOBr(s) must be dissolved in 134 mL of 0.275 M HOBr to produce a buffer solution with…

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Q: Consider the titration of 30.0 mL of 0.259 M weak base B (Kb = 1.3 x 10⁻¹⁰) with 0.150 M HI. What…

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Q: Consider the titration of 30.0 mL of 0.263M weak base B (Kb = 1.3 x 1010) with 0.150 M HI. What is…

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Q: What is the pH of 0.37 M acetic acid to 1.00 L of which 1.43 g of sodium acetate, NaCH3CO2, has been…

A: pKa of Acetic acid can be determined as : Molarity of CH3COONa can be calculated as follows:

Q: What volume of 0.500 M NaOH should be added to 750.0 mL of 0.250 M HCO3- to make a buffer with a pH…

A: Given :-we have to find the volume of 0.5 m NaoH should beadded to 750 mL of 0.25 m H co3- to make a…

Q: Consider the following buffer system: 1.03 M H3PO4 and 0.93 M H₂PO4-. What is the pH of such a…

A: Acidic buffer :-  A mixture of weak acid and its salt with strong base is known as acidic buffer…

Q: Consider the titration of 30.0 mL of 0.275 M weak base B (Kb = 1.3 x 10-10) with 0.150 M HI. What is…

A: It is given that concentration of weak base is equal to 0.275 M and base constant is equal to…

Q: What mass of sodium glycolate (98.03 g/mol) must be added to 300.0 mL of 1.00 M glycolic acid…

A: Given: pH of the buffer = 4.00 Ka of glycolic acid = 4.48×10-4 Molarity of glycolic = 1.00 M Volume…

Q: Stårting with 0.750L of a buffer solution containing 0.35 M benzoic acid (CH5COOH) and 0.30 M sodium…

A: Concentration of HCl added in the solution = Moles of HCl/Volume = 0.12mol/0.750L = 0.16M From the…

Q: A 10.00 mL sample of 1.20 M HNO2 (analyte) (pK, = 3.34 and K = 4.57x10) is titrated with 1.20 M NaOH…

A: 1.) First we would calculate moles and draw ICE table for reaction between acid and base.  Then we…

Q: What is the pH of a buffer that is 0.110 M HPO422 and 0.220 M H2PO4^ 2- at 25°C?

A: Given,The concentration of HPO42- = 0.110 MThe concentration of H2PO4- = 0.220 M

Q: Consider a buffer made by adding 52.3 g of (CH3),NH,l to 250.0 mL of 1.42 M (CH3)2NH (Kb = 5.4 x…

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Q: What is the pH of a buffer solution prepared by dissolving 33.7 g NaCH3COO in a sufficient volume of…

A: Solution -