Phosphoric acid is a triprotic acid with the p?a values p?a1=2.148, p?a2=7.198, and p?a3=12.375.   You wish to prepare 1.000 L of a 0.0400 M phosphate buffer at pH 7.800. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2PO4 and Na2HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture?   What other combination of phosphoric acid and its salts could be mixed to prepare this buffer? (select as many as are true)   H3PO4 and NaH2PO4   Na2HPO4 and Na3PO4   NaH2PO4 and Na3PO4   H3PO4 and Na2HPO4   H3PO4 and Na3PO4

Q: Suppose you are given solutions of 1.00 M acetic acid and 1.00 M sodium acetate and are asked to…

A: This is a buffer solution so  pH = pKa + log ([salt]/[Acid])

Q: What is the pH of a buffer solution prepared from 0.411 moles of CH3COOH and 0.457 moles of NaCH3COO…

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Q: In a titration of 11.5 mL of a 0.425 M solution of a diprotic acid H₂C₄H₄O₆ (tartaric acid) with…

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Q: (b) In order to be a buffer solution, the solution must contain a species which reacts with H and a…

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

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A: Answer:- This question is answered by using the simple concept of calculation pH of solution made by…

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A: The question is based on the concept of chemical equilibrium. We have been given pH at first…

Q: 15.0 mL of 0.450 M formic acid (HCOOH, Ka=1.8x10-4) is titrated with 0.250 M NaOH. Calculate the pH…

A: The given information is as follows: The value of Ka of the formic acid = 1.8x10-4 The concentration…

Q: How many liters of 0.951 M LiOH will be needed to raise the pH of 0.263 L of 4.55 M carbonic acid…

A: LiOH is a strong base and carbonic acid is a weak acid. Carbonic acid dissociates as: H2CO3  ⇔ 2H+ +…

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A: Acid dissociation constant ka is given by equilibrium concentration of product divided by…

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A: The provided concentration of acid(HA)=0.10M Initial volume=100ml HA dissociate into HA ⇆ H+  + A-…

Q: What is the concentration of conjugate base in a buffer that has a pH=6.39 and a Ka=4.66×10−5.…

A: Given that,  Concentration of [H+] in a buffer =4.07×10-7 M Ka value of weak acid = 4.66×10−5. Then,…

Q: acetic acid has ka=1.8×10−5.A 1.0 L buffer solution contains 0.10 mol CH3COOH and 0.10 mol CH3COONa.…

A: Given : Initial moles of CH3COOH = 0.10 mol Initial moles of CH3COONa = 0.10 mol Volume of solution…

Q: How does the buffer solution absorb the added H+ and OH- to make the pH change very small?

A: A buffer can be acidic or basic in nature. A buffer that contains a weak acid with its conjugate…

Q: None

A: Step 1: To begin answering this question, we must first determine the concentration of each species…

Q: A mixture is made by combining 110 mL of 0.015 M HCl and 215 mL of 0.025 M HI. What is the pH…

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Q: Consider the following reaction: CH3​COOH(aq)+OH−(aq)CH3​COO−(aq)+H2​O(l)       See Periodic Table…

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Q: 1.0 mol NaH2PO4 and 1.0 mol Na2HPO4 are added to sufficient water to give a 1L buffer solution.…

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Q: what is the pH?

A: Given :-  Concentration of weak base = 0.120 M  Concentration of conjugate acid = 0.590 M  Kb = 5.9…

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A: The mixture of ammonia and ammonium ion is a weak base and it's salt of strong acid respectively.…

Q: The organic compound trishydroxymethylaminomethane is abbreviated Tris and is basic. The conjugate…

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Q: If 5.00g NH4Cl(s) is dissolved in 0.250M NH3, what volume of NH3 (in mL) is required to make a…

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Q: Calculate the pH of the following solution when the 2 reagents are mixed: 25.00mL of 0.550M HCI…

A: Answer: This question is based on the pH of buffer solution. Buffer solution is the type of solution…

Q: How much 0.500 M NaOH should be added to 12.0 g of tris hydrochloride to reach pH 7.77 in a final…

A: Given, Molarity of NaOH = 0.5 MAmount of tris-hydrochloride (T-HCl) = 12 gFinal pH = 7.77Final…

Q: The first equivalence point for 40.00 mL of 0.1000M H3PO4 is reached when 21.38 mL of 0.1871 M NAOH…

A: The pH of the solution is the power of protons in the solution. While pOH is related to the basicity…

Q: Formic acid, HFor, has a Ka value of 1.8 x 10^-4. You need to prepare a buffer having a pH of 3.25…

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Q: The p?a of hypochlorous acid is 7.530 . A 58.0 mL solution of 0.130 M sodium hypochlorite ( NaOCl )…

A: Answer: Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: How many grams of lactic acid and mL of 0.1M sodium hydroxide must be added to 100 mL of water to…

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Q: Enough of a monoprotic weak acid is dissolved in water to produce a 0.0105 M solution. The pH of the…

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Q: by the addition of strong base in a buffer, pH of the solution is maintained by?  1- Shifting…

A: Given ,  By the addition of strong base in a buffer, pH of the solution is maintained by?  1-…

Q: The acid HZ has a pKa of 7.03.  If 25.00 mL of a 0.111 M solution of HZ are titrated with 0.100 M…

A: The objective of the question is to determine the pH before the addition of any base.It is given…

Q: If a buffer solution is 0.180 M in a weak acid (Ka = 1.7 × 10 − 5 ) and 0.600 M in its conjugate…

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Q: An aqueous solution contains 0.329 M methylamine (CH3NH2). How many mL of 0.305 M perchloric acid…

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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.