A buffer made up of equal volumes (461.7 mL) of each of 0.856 MAH and 0.710 M A minus What is p H of the buffer after addition of 13.04 mL of 0.132 M HCI? Ka of HAis 3.940E-5.

Q: An 800.0 mg sample containing sulfate was treated with a slight excess of Bac vielding a precipitate…

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Q: A 24.0 mL sample of 0.113 MM sulfurous acid (H2SO3) is titrated with 0.1013 M KOH. At what added…

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Q: 0.3g of MBr is dissolved in distilled water to make 250mL in a standard flask. 25 mL of this is…

A: Molarity - ratio of number of moles of solute to the volume of solution in liters. Formula is,…

Q: 5. A 100.0 mL aliquot of 0.100 M diprotic acid H2A (pK1 = 4.00, pK2 = 8.00) was titrated with 1.00 M…

A: Solution- Given-pK1 = 4.00 and pK2 = 8.00, 0.100 M diprotic acid, 1.00 M NaOH aliquot = 100.0ml

Q: 1. A 0.2700 g sample of impure Na,CO3 required 24.12 mL of 0.1684 M HCI and a back- titration with…

A: Solution -

Q: What volume of 0.12M HCN and 0.13M CN- would be required prepare 500mL of pH =9 buffer? The pKa of…

A: Given data,Molarity of HCN=0.12MVolume of CN-=0.13MVolume of buffer=500mLpH=9pKa=9.21

Q: Calculate the needed reagents in preparing 250mL of 0.200M KH2PO4-K2HPO4 buffer with pH of 7.40.…

A: Given: Total concentration of soluion = 0.200 M Volume of solution = 250 mL = 0.250 L…

Q: A 0.2480 g sample contained only NaCl and KBr. It was dissolved in H20 an required 49.14 mL of…

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Q: A buffer solution is made that is 0.400 M in HNO2 and 0.400 M in NaNO2. If Ka for HNO2 is 4.50 ×…

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Q: A buffer solution is made that is 0.341 M in H2S and 0.341 M in KHS. If Kal for H2S is 1.00 x 10-7,…

A: Given Data: H2S = 0.341 M KHS = 0.341 M  pKa = 1.00 x 10-7  Steps Write the Dissociation Ionic…

Q: A buffer solution is made that is 0.305 M in H2S and 0.305 M in KHS. If Ka1 for H2S is 1.00x10^-7…

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Q: A buffer solution is made that is 0.357 M in HCN and 0.357 M in KCN. If Ka for HCN is 4.00x10^-10 ,…

A: Given : Concentration of weak acid HCN = 0.357 M Concentration of conjugate base salt of weak acid…

Q: A buffer solution is made that is 0.406 M in HNO2 and 0.406 M in NaNO2. -4 If Ka for HNO2 is 4.50 ×…

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Q: If a solution contained Fe3+ ions at a concentration of 0.1 M, what pH would have to be reached…

A: The reaction of Fe(OH)3 to precipitate is given as,

Q: The fluids within cells are buffered by H,PO, and HPO,?-. a. Calculate the ratio of HPO,2- to H,PO,…

A: a. The value of H2PO4- is 7.2 The required pH is 7.1 Using the Henderson-Hasselbalch equation, we…

Q: A solution containing Mg2+ was buffered to pH 9.97 and titrated with EDTA. Eriochrome black T, with…

A: Eriochrome black T is a diprotic acid, represented as H2E.

Q: A Phosphate Buffer NaH2PO4 - K2HPO4  with a final volume of 500. mL, concentration of 0.10M with a…

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

Q: After preparing the buffer, Joey decided to determine the buffer capacity of the solution by…

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Q: Calculate pFe at cach of the points in the titration of 25.00 mL of 0.02051 M Fe by 0.03685 M EDTA…

A: Given: pH = 5 [EDTA] = 0.03685 M [Fe2+] = 0.02051 M volume = 25 mL   a) 25 mL of 0.02051 M Fe2+ is…

Q: A 25.00 ml of Ni2 solution was diluted in HCI and treated with 25.00 ml of 0.05283 M NazEDTA. The…

A: We know that   EDTA forms 1:1 complex with metals Zn+2 and Ni+2 Initial moles of EDTA = M*V =…

Q: A buffer was made by mixing 0.1926 moles of C 9H 7O 4H with 0.1960 moles of NaC 9H 7O 4 and diluting…

A: Initial : · Moles C9H7O4H = 0.1926 mol· Moles NaC9H7O4 = 0.1960 mol· Volume of Solution = 1…

Q: 2. A carbonate buffer of pH 10 is needed by a chemist. How many grams of Na,CO, is needed to…

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Q: It is desired to determine the concentration of chlorides in a powdered milk following the method of…

A: Given data,Mass of milk sample=1.5gMolarity of AgNO3=1MVolume of  AgNO3 added=20mLMolarity of…

Q: Calculate the volume of 0.1M MA2 needed to be added on 100mL of 0.1M HA (Ka=1x10^(-5)) to prepare…

A: The Henderson Hasselbalch equation is given by, pH = pKa+log[A-][HA] where Ka is the acid…

Q: A buffer was made by mixing 0.1500 moles of HOBr with 0.1296 moles of NaOBr and diluting to exactly…

A: In the given buffer solution , HOBr is a weak acid and NaOBr is salt of conjugate base of HOBr.…

Q: ml of a solution containing an 30.00 unknown amount of I ( iodide) was treated with 50 ml of 0.3650M…

A: Given :           Volume of solution = 30.0 mL =0.03 L          50 ml of 0.3650 M AgNO3 = 0.050 L…

Q: 50 cm3 of 0.05 M weak acid solution is titrated with 0.1 M NaOH solution. The measured pH values are…

A: Given: Volume of weak acid = 50 cm3 Concentration of weak acid = 0.05 M Concentration of NaOH = 0.1…

Q: A 0.4071-g sample of CaCO3 (MM: 100.09 g/mole) is transferred to a 500-mL volumetric flask,…

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Q: Mercury thiocyanate - Hg(SCN)2 - is slightly soluble in water.  Its Ksp is 2.8 x 10-20. In the…

A: Upon dilution, the number of moles in the solution remains constant whether the change in the…

Q: When making 500.0 mL of a buffer solution at pH 4.00 from 0.100 M NACHO2 and 0.200 M HCHO2, what…

A: Given: pH=4.00 Ka =1.8 x 10-4 pKa=-log (1.8 x 10-4) =3.74 Total volume=500 mL=500/1000=0.5 L Suppose…

Q: The Ka values for nitrous acid (HNO2) and hypochlorous (HClO) acid are 4.5 x10-4and 3.0 x10-8,…

A: The pKa values of HNO2 and HClO is calculated below. The pKa of HClO is closer to the required pH…

Q: 500 ml of 0.1019 M NaOH solution is prepared It is immediately forgotten with the cap open and…

A: NaOH reacts with carbon dioxide as: 2NaOH+CO2→Na2CO3+H2O

Q: What mass in unit of gram of solid NaHCO3 (molar mass = 84.00 g/mol) should be added to 1.00 L of…

A: In this question, we want to determine the mass of NaHCO3.  How we can determine, you can see…

Q: 5.00 mL of a potassium solution is passed through an ion exchange column in protonated form. The…

A: It is given that 5mL of potassium is passed through ion exchange and the solution is titrated with…

Q: (a) For the precipitation reaction: A+ + B–  AB(s)Calculate the value of the equilibrium constant…

A: The answer for part (a) is given below. Kindly repost the other questions as separate question. a)…

Q: A 0.3606-g of a weak monoprotic was dissolved in water and then titrated with 0.1040 N KOH solution.…

A: Given - weak monoprotic           = 0.3606-g titrated with solutions   = 0.1040 N KOH  Total…

Q: Suppose titration of 100.00 mL mixture of 0.0500 M in Br +0.08 M CI with 0.4000 M AgNO3. What is pAg…

A: Please find the below attachments.

Q: A 25.00 ml of Ni2+ solution was diluted in HCl and treated with 25.00 ml of 0.05283 M Na2EDTA. The…

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Q: If 2 mL of 0.02 M AgNO3 is added to 2 mL 0.011 M K2CrO4, which reagent is in excess? should a…

A: Solution-  2mL of 0.02 M agNO3-2mL ×0.02 mol L=0.04 M mol AgNO32mL of 0.0011 M K2CrO4-2mL ×…

Q: 0.0585g of Na2C2O4 10 mL of distilled water, 2 M H2SO4 were added to adjust the KMnO4 solution…

A: A titration is a technique that uses a known concentration of a solution to calculate the…

Q: maining silver was back-titrated with 0.05322 M KSCN, requiring 35.14 mL to reach the endpoint.…

A: AgNO3 and I–consume to form a precipitate of AgI, and AgNO3. KSCN forms a precipitate of AgSCN. Each…

Q: If 25.0 mL of 0.19 M methylamine (CH3NH2) (K, = 4.4 x 10-4) is titrated with 0.029 L of 0.68 M HBr,…

A: Interpretation - To determine the pH of the salt when 25 ml of 0.19M of methylamine is titrated with…

Q: 16.0mL of a 0.750M solution of H2CO3 are titrated with a 1.00M solution of KOH. At what volume of…

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Q: of hydrazine CNGtly) la How would have to be adbled to 500 mL of a 6.0 M Nz Hst solutlen to make a…

A: Answer :-  Mass of N2H4 would have to be added in 500 mL 6.0 M N2H5+ solution to make pH 8.0 buffer…

Q: Calculate the pH when 4.0 mL of 2.0 M NaOH is added to the buffer solution containing 25mL of 1.0 M…

A: Answer :- pH = 5.03…

Q: 1) A 1.0L solution of 1.0 M Naf is titrated with 1.0 M HCI, What is the pH of the solution after the…

A: (1) pH when volume of HCl added = 0 mL C = 1.0M NaF , Anion F- is undergoing hydrolysis and pH is…

Q: A buffer solution is made that is 0.480 M in H2S and 0.480 M in NaHS. If Kal for H2S is 1.00 × 10-7,…

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Q: A buffer was made by mixing 0.1970 moles of HC 7H 5O 2 with 0.1068 moles of NaC 7H 5O 2 and diluting…

A: When HBr is added to the buffer solution the hydronium ion is consumed by the conjugate base which…

Q: Consider the titration of 45.0 mL of 1.0 M KOH with 1.0 M HC1. a. What is the total solution volume…

A: We know that Volume of KOH = V1= 45ml Molarity of KOH = M1= 1.0M Molarity of HCl = M2 =1.0M Volume…

Q: A 25.00 ml of Ni2* solution was diluted in HCI and treated with 25.00 ml of 0.05283 M NazEDTA. The…

A: We know that   EDTA forms 1:1 complex with metals Zn+2 and Ni+2 Initial moles of EDTA = M × V =…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.