How many moles of HA would need to be added to 481 mL of 0.816 M NaA to produce a solution with a pH equal to 6.19? The Ka of the weak acid (HA) is 1.2 × 10-7.

Q: A certain weak base has a Kb of 8.70×10−7. What concentration of this base will produce a pH of…

A: Since you gave posted 2 unrelated questions, we are entitled to answer the first only.

Q: The weak acid HZ has a Ka of 2.55 x 10-4.(a) Calculate the pH of 0.075 M HZ.(b) Calculate the pOH of…

A: Acid dissociation constant Ka is utilized to determine the acidic and basic nature of a solution. It…

Q: For an unknown weak acid HA, the Ka is known to be 1x10-5. What is the pH of a 0.2 M solution of…

A: A strong base and weak acid react to form salt and water. The salt will be basic in nature and the…

Q: Which of the following solutions will have the lowest pH value? Group of answer choices 0.10 M HNO3…

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Q: Ascorbic acid (HC6H706) is a weak monoprotic acid (HA); A) Calculate the pH of a solution produced…

A: The above question is from titration of weak acid with a strong base.

Q: Ka for hypochlorous acid HCIO is 3.0 x 10-8. Calculate the pH after the addition of 15.0o mL of…

A: Initial moles of HClO = Molarity ×Volume = 0.100 M × 40.0 mL = 4mmoles Initial moles of NaOH =…

Q: How many moles of NaA would need to be added to 544 mL of 1.07 M HA to produce a solution with a pH…

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

Q: Enough of a monoprotic weak acid is dissolved in water to produce a 0.0176 M solution. The pH of the…

A: Given, Concentration of weak acid (C) = 0.0176 M pH of solution = 2.47 Dissociation constant (Ka) =…

Q: 3..A 10 mL solution of 0.38 M HA (pKa = 4.40) is mixed with 8.0 mL of 0.38 M KOH. What is the pH of…

A: Given-> Volume of HA = 10 ml Molarity of HA = 0.38 M Volume of KOH = 8.0 ml Molarity of KOH =…

Q: Calculate the Ka of weak acid.  The initial concentration of the weak acid is 4.93 x 10-4 M.  The…

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Q: What is the pH of a solution that is 0.20 M potassium cyanate, KCNO and 0.16 cyanic acid HCNO? The…

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Q: pH calculation after the second equivalence point:   Calculate the pH of 50.0 mL of 0.250 M oxalic…

A: Answer: This question is based on acid-base titration where base solution is being added into the…

Q: 9) HB has a Ka of 5.2 x 10-5 and HC has a Ka of 4.6 x 10-4 . Which solution will have a lower pH,…

A: Given : Ka of HB = 5.2 X 10-5  Ka of HC = 4.6 X 10-4  And concentration of HB = concentration of HC…

Q: Calculate the expected pH of a 0.100 M solution of ammonium chloride given that   Kb for ammonia is…

A: We have 0.1 M of ammonium chloride ,Kb is given as 1.76 × 10-5 . We have to calculate the pH of…

Q: 2) HF is as weak, monoptoric acid with a Ka value of 6.6x104. Calculate the pH of a 0.25 M solution…

A: Weak acid and its salt will form buffer solution.  Note: As per our company guideline we can answer…

Q: A solution is prepared from two weak acids, 0.2 M HA and 0.1 M HB. If the Ka of HA is 1x10-5 and the…

A: pH - It is the negative logarithm of the hydronium ion concentration of a  solution. Equilibrium -…

Q: Calculate the pH of a 0.020 M solution of phenylacetic acid, C6H5CH2COOH. What will be the pH if the…

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Q: 8) What will be the pH (aq., 25 oC) of 250.0 mL of a solution of 0.821 M HCOOH and 0.909 M HCOOK,…

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Q: A solution is prepared by dissolving  1.600 g  of sodium acetate (CH3COONa) into  100.00 mL  of a…

A: • pH of weak acid can be calculate by      the help of Hendenson - Hasselbalch equation:-pH=pka +…

Q: calculate Ka and the percent ionization of an acid HA given that 0.70 M of HA has a pH of 4.00

A: Weak acid are those acid which does not dissociate completely in aqueous solution.

Q: What is the pH after 15.0 mL of 0.200 M HCl has been added to 100.0 mL of a buffer solution, X, with…

A: Given that,  Concentration of 100 mL weak base X solution = 0.70 M Moles of X in 100 mL buffer =…

Q: Given that the Ka of a monoprotic acid HA is 3.20 x 10-7 , and the acid HA concentration is 0.751 M,…

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Q: Determine the pH of a solution of a weak acid (HA) that is 0.17 M. The Ka of the weak acid is 7.5 x…

A: Given a concentration of weak acid (HA) =0.17M Acid dissociation constant value =        7.5 x 10-5…

Q: If a 0.8M solution of weak acid, HA, has a pH = 2.8, calculate the Ka of the acid.

A: The pH of a solution denotes the -ve logarithm of hydronium ion concentration in moles per liter.…

Q: 1.) HA is a weak acid. Its ionization constant, Ka, is 3.1 x 10-13. Calculate the pH of an aqueous…

A: 1)  The ionization constant for the weak acid is = 3.1 x 10-13 The initial NaA concentration is =…

Q: For each of the following cases, decide whether the PH is less than 7, equal to 7, or greater than…

A: Moles = Concentration X volume of solution in L

Q: 1.) HA is a weak acid. Its ionization constant, Ka, is 3.1 x 10-13. Calculate the pH of an aqueous…

A: Answer:- This question is answered by using the simple concept of calculation of weak acid and the…

Q: What is the pOH of a solution prepared by diluting 208.4 mL of 1.059 M HNO3 (ka>>1) to a total…

A: You have asked multiple type questions, we will solve only first  questions for you. If you want any…

Q: Determine the pH of a solution made of 0.0082M H3PO4 and 0.0046M Na2HPO4. (Ka of H3PO4 = 7.11 x…

A: Balance chemical equation:                                   H3PO4 + Na2HPO4  ----->   2NaH2PO4…

Q: A 0.115 M solution of a weak acid (HA) has a pH of 3.29. Calculate the acid ionization constant (Ka)…

A: The concentration of HA = 0.115 M pH = 3.29 pH = 3.29H3O+ =10-pH=10-3.29=0.000513 M

Q: 6. Which of the following has the highest pH? a. 1.00 M NaNO3 b. 1.00 M NaNO2 c. 1.00 M NaH,PO4 d.…

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Q: A 1.0 M solution of a weak acid, HA has a pH of 2.64. What is the value of Ka for this acid?

A: The acidic strength of all known acids is dependent on their dissociation constants. This constant…

Q: The Henderson-Hasselbalch equation for the reaction can be written as :  pH = pKa + log ([A–]/[HA])…

A: The Henderson-Hasselbalch equation for the reaction can be written as :  pH = pKa +log[salt][acid]…

Q: How many grams of NaOH (MW=40.0 g/mole) do you need to add to 50.0 ml of a 0.2 M weak acid HA…

A: Given data contains, Concentration of HA is 0.2 M. Volume is 50.0 mL. Ka is 4×10-6. The moles of HA…

Q: Buffers remote

A: Given: Ionisation constant Ka = 1.8×10-5 Concentration of acetic acid = [HC2H3O2] = 0.1 M…

Q: Calculate the pH of a solution when 32.0 mL of 0.200 M formic acid (HCOOH, Ka = 1.77 x 10-4) is…

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Q: Ascorbic acid (vitamin C, C6H8O6) is a cliprotic acid (Ka1= 6.8 x 10-5 and Ka2 = 2.7 x 10-12). What…

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Q: If a 0.59 M solution of a monoprotic acid HA has a pH of 4.57, what is the Ka value of the acid HA?

A: Concentration of Acid HA = 0.59 M pH = 4.57     ICE Table:…

Q: Which pH would change the most if each of the following were diluted by adding 90.00 mL of distilled…

A: pH is the measurement of the presence of H+ ions in the solution. Mathematically it is given as,…

Q: For H2CO3, Ka1= 4.3 x 10^-7, Ka2= 4.7 x 10^-11. What is the pH of a 0.28 M solution of carbonic…

A: H2CO3 is a weak acid.  pH = 0.5pKa - 0.5logC ....(1) Here, pKa1 = -logKa1 = -log(4.3*10^-7) = 6.37…

Q: Calculate the pH of a 0.020 M solution of phenylacetic acid, C6H5CH2COOH. What will be the pH if the…

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Q: A solution is prepared at 25 °C that is initially 0.34 M in dimethylamine ((CH3),NH),a ((CH3),NH,C).…

A: Hi, you have posted multiple questions we will answer the first question. If you want any specific…

Q: Suppose 5.00 g of propanoic acid (HC3H5O2) is dissolved in enough water to yield 100.0 mL of…

A: Molar mass of propanoic acid = 3×12+6×1+2×16=74g/mol Number of moles = massmolar…

Q: Ka for hypochlorous acid, HCIO, is 3.0x10-8. Calculate the pH after 10.0, 20.0, 30.0, and 40.0 mL of…

A: Given: Concentration of NaOH= 0.100 M Concentration of HClO= 0.100 M Ka=3.0×10-8 To find: The pH of…

Q: 1. calculate the pH of a solution obtained by mixing 30.4 mL of 0.03 M HCL with 31.4 mL of o.1 M…

A: SOLUTION 1. Here both HNO3 and HCl are strong acid, total proton concentration is the sum of the…

Q: - calculate the pH of a solution of  20 mL of 0.1M  H2A (weak acid) after addition of  46mL    of…

A: The concentration of a solution can be defined in terms of molarity as the ratio of the amount of…

Q: A 0.10 M aqueous solution of which of the following salts will have the lowest pH? A. Ni(NO3)2 B.…

A: Since the solution should be having lowest pH. Hence the solution will be most acidic because lower…

Q: Calculate the pH of the solution formed when 49.30 mL of 0.0170 M NaOH is added to 49.30 mL of…

A: Given, NaOH : Volume,V=49.30 mLMolarity = 0.0170 M Weak acid : Volume,V=49.30 mLMolarity = 0.0170 M…

Q: Caffeine is a weak base with a ?bKb of 4.1×10−44.1×10−4. Calculate the initial molar concentration…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: pH calculation before the first equivalence point: Calculate the pH of 50.0 mL of 0.250 M oxalic…

A:

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.