What is the pH of a buffer 0.10M (Salt) Na2HPO4/0.15M (acid) NaH2PO4? [ Ka2 = 6.2x10-8]

Q: If a buffer solution is 0.230 M in a weak acid (Ka = 3.4 x 10-3) and 0.410 M in its conjugate base,…

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Q: 6. A buffer solution is formed by adding 0.500 mol of sodium acetate (CH3CO2NA) and 0.500 mol of…

A:

Q: When 0.412 g of a weak base with Kb = 3.10 ×10-5 the base is dissolved in 1.00 L of solution, it has…

A: Assuming the molar mass is M  Hence moles of base = mass / molar mass = 0.412 / M And concentration…

Q: (Q24) What is the pH of a buffer solution that is 0.338 M in ammonia and 0.455 M in ammonium…

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Q: ) If 5.0 mL of 0.100 M NaOH is added to 100.0 mL of a 0.0500M phosphate buffer solution at pH 7.2,…

A: A solution which resists the change in pH when a small amount of acid or base is added to it,  is…

Q: You have to prepare a pH = 3.50 buffer, and you have thefollowing 0.10 M solutions available: HCOOH,…

A: Given: Volume of buffer = 1.00 L pH of buffer = 3.50 Concentration of solutions = 0.10 M

Q: Two acids are mixed in solution: 0.20 M of HBr and 1.50 M of HBRO (Ka = 2.3 x 10-9). What is the…

A: HBr is a strong acid while HBrO is weak acid and therefore, the resulting pH will be due to HBr,…

Q: A buffer solution is 0.486 M in NaH2PO4 and 0.394 M in Na, HPO4. If Ka for H2PO4¯ is 6.2 × 10¬8,…

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Q: If a buffer solution is 0.170 M in a weak base (Kb = 4.2 × 10-5) and 0.490 M in its conjugate acid,…

A: Buffer solution: It is an aqueous solution which contains a mixture of a weak base and its conjugate…

Q: If a buffer solution is 0.200 M in a weak base (Kp = 6.4 x 10-) and 0.480 M in its conjugate acid,…

A: Again.     pH= 14 - pOH Using these two formula pH of the solution can be calculated.

Q: For H2CO3, Ka1 = 4.3 x 10-7, K22 = 4.7 × 10-11 What is the pH of a 0.15 M solution of carbonic acid?

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Q: Lactic acid, HC3HSO3, is a weak acid and found in sour milk. The conjugate base of Lactic acid is…

A: Calculation of Ka value of lactic acid:  The concentration of sodium lactate NaC3H5O3 = 0.089 M The…

Q: What is the pH of a 0.220 M solution of sodium cyanide (NaCN)? Ka for HCN is 4.9 x 10-9.

A: NaCN has one less hydrogen and corresponds to a conjugate base (a weak base). The credentials…

Q: | Calculate the pH of a solution which is 0.345 M NHẠCI. (Kô of NH3 = 1.80 x 105)

A: Introduction: An acid is defined as substance which can donate protons and base which can accept…

Q: What is the pH of a 0.320 M solution of Ca(NO₂)₂ (Ka of HNO₂ is 4.5 × 10⁻⁴)?

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Q: A buffer solution is prepared by dissolving 0.200 mol of NaH2PO4 and 0.100 mol of NaOH in enough…

A: pH is used to determine the concentration of hydronium ion.

Q: you mix 100. mL of 0.11 M HCl with 50.0 mL of 0.22 M NH3, what is the pH of the resulting solution?…

A: Volume of HCl=100.0mL Concentration of HCl=0.11M Volume of NH3=50.0mL Concentration of NH3=0.22M For…

Q: What is the pH of a 80.0 mL solution of 1.25 M concentration acid HA after 40.0 mL of 2.00 M…

A: Equation for the reaction of the monoprotic acid, HA and NaOH is: HA(aq) + NaOH(aq)   ---->…

Q: HCIO is a weak acid (Ka 4.0 x 10-8) and so the salt NaCIO acts as a weak base. What is the pH of a…

A: Given data; Ka=4×10-8Also, Kw=Ka×KbAnd,Kw=1×10-14 Consider the dissociation of given weak acid as;…

Q: The PH of 0.0296M HA ( Ka 8.4 *10-9) plus * . . 0.1026 M NaA is 4.3 2 O 8.6 7.5 O

A: The question is based on the concept of PH calculations. we have been given a weak acid and its…

Q: 2) What is pH of the following weak acids" a. 0.01 M NH4CI b. 0.01 M NH3 c. 0.01 M NHẠCI added to an…

A: PH = -log ( H+) For aqueous solution highest PH  at 25°C = 14 but non-aqeous solution it can be…

Q: Fill in the left side of this equilibrium constant equation for the reaction of carbonic acid…

A: in this question given ka ka= Acid dissociation constant, acid dissociation constant is used to…

Q: What is the pH of a 0.830 M solution of Ca(NO₂)₂ (Ka of HNO₂ is 4.5 × 10⁻⁴)?

A: The chemical equation may be written as: The given data is: Concentration of Ca(NO2)2 =0.830M Ka of…

Q: What is the pH of a buffer solution that is 0.159 M in hypochlorous acid (HCIO) and 0.121 M in…

A: Given: Concentration of hypochlorous acid (HCIO)=0.159 M Concentration of  sodium hypochlorite…

Q: What is the pH of a mixture of 0.042 M NaH2PO4 and 0.058 M Na2HPO4?

A: Given : Concentration of NaH2PO4 = 0.042 M Concentration of Na2HPO4 = 0.058 M

Q: Calculate the pH of a 0.250 M aqueous solution of CH3COOH. alculate the pH of a solution having…

A: Given,  i) The molarity of aqueous solution of   CH3COOH = 0.250 M.  The pH of the solution is: ii)…

Q: A buffer solution is 0.387 M in HNO2 and 0.314 M in NaNO2 . If Ka for HNO2 is 4.5×10-4 , what is the…

A: Buffer is a solution which resists the change in pH of a solution by the addition of acid or base.…

Q: Calculate the pH of a solution made by adding 0.123 g of solid NaOH to 275 mL of 0.350 M HNO2 (Ka =…

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Q: What is the pH of a buffer produce by mixing 0.1330 mole of HN 3 with 0.1396 mole of LiN 3 and…

A: Given, moles of acid (HN3) = 0.1330  Moles of conjugate base = 0.1396

Q: A diprotic acid, H2A, has the following ionization constants: K = 1.1 x 10 and K =2.5 x 106. In…

A: Given: Ka1 of H2A = 1.1 × 10-3  Ka2 of H2A = 2.5 × 10-6  And pH of buffer required = 5.80

Q: A buffer solution is 0.374 M in H2 S and 0.205 M in KHS. If Ka1 for H2S is 1.0 x 10-7, what is the…

A: when a weak base and its salt are present in solution, they form a buffer solution.

Q: Calculate the pH of a buffer prepared by mixing 0.38 M C5H5N with 0.87M C5H5NH+ given that the Kb…

A: Buffer is the solution of mixture of weak acid/weak base with its salt of strong base/strong acid

Q: Which solution below would have the greatest buffering capacity? The solution was prepared from a…

A: To find which buffer have greatest buffering capacity first we have to know about the Buffer…

Q: A buffer solution is 0.372 M in NaHC204 and 0.323 M in Na2C₂O4. If K₂ for HC204 is 6.4E-5, what is…

A: Given: Concentration of NaHC2O4 is 0.372 M Concentration of Na2HC2O4 is 0.372 M Ka is 6.4×10-5 To…

Q: 4) What is the pH of a buffer solution, prepared by mixing of 75 mL 0.1 M CH3COOH solution and 150…

A: In this question we have to tell the PH of the buffer solution.

Q: Calculate the pH of a buffered solution that is 0.100 M in C6H5COOH (Ka = 6.4 x 10–5) and 0.100 M in…

A: Given: C6H5COOH=0.100 M Ka=6.4×10-5 C6H5COONa=0.100 M To find: pH of buffered solution Solution: pH…

Q: A buffer solution is 0.328 M in H₂C2O4 and 0.275 M in NaHC204. If Ka for H₂C₂O4 is 5.9E-2, what is…

A: In this question, we need to determine pH of the solution. Here given the values of concentration of…

Q: What is the pH for a weak monoprotic acid if a 0.020 M solution of the acid has a Ka of 3.28 x 10-7…

A: The H3O+ concentration for the weak acid is determined given below:

Q: what is the pH of this buffer solution?

A: Given :-  concentration of HNO2 = 0.309 M  concentration of NaNO2 = 0.340 M  Ka = 4.5 × 10-4  To…

Q: If vinegar contains 4% (w/v) of acetic acid (Ka= 1.8x10-5), calculate the pH of solution made by…

A: Q.1:  Before dilution:  concentration, C1 = 4%(w/v)  Volume, V1 = 50 mL  After dilution:…

Q: What is the pH of a solution that is 0.32 M H(C6H5COO) and 0.12 M Na(C6H5COO)?   The Ka of…

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

Q: Calculate the PH of:                       I. A 0.5 molar solution of an unknown weak acid…

A:

Q: 0.0250 mol/L solution of Mn2+ is buffered with NH 3 and NH4Cl in such a way that there is no…

A: To Calculate: The concentration maximum permissible OH in the aqueous medium: The ammonium…

Q: The Ka of hypobromous acid, HOBr, is 2.6 x 10-9. Calculate the pH of a solu tion which is composed…

A: PH of acidic buffer can be calculated as follows

Q: If a buffer solution is 0.240 M in a weak acid (Ka = 3.8 x 10-5) and 0.530 M in its conjugate base,…

A: Introduction Henderson - Hasselbalch equation gets used to calculate the pH for any buffer solution…

Q: A buffer solution is 0.402 M in NaH2PO4 and 0.318 M in Na2HPO4. If Ka for H2PO4- is 6.2 x 10 -8,…

A: The solution has NaH2PO4 which will dissociate completely into ions Na+ and H2PO4-  Hence…

Q: (Q23) What is the pH of a buffer solution that is 0.646 M in hydrofluoric acid and is 0.530 M is…

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

Q: 6. How many grams of NazHPO, *2 H20 (177.99 g/mol) should be added to 500 mL of 0.5 M H3PO4 to give…

A: H3PO4 and Na2HPO4 will make buffer solution of the combination of weak acid and weak base.

Q: 3. A buffer solution is prepared by adding 5.50 g of ammonium chloride and 0.0188 mol of ammonia to…

A: Buffer solutions The solution that resists any change in pH is known as buffer solution. pH of such…

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.