When 14.08 mL of 0.1594 M NaOH is added to 25.00 mL of 0.1235 M HX (an unknown weak acid), the resulting pH is 4.7. What is the Ka of the unknown acid?

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: the pH of the solution?

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Q: A 0.035 M solution of a weak acid (HA) has a pH of 4.88.What is the Kₐ of the acid?

A:

Q: A buffer volution is prepared by adding s.50 g of ammonium chloride and o.0188 mol of ammonia to…

A: a. Given information: Mass of ammonium chloride NH4Cl or NH4+ =5.50 g The number of moles of ammonia…

Q: When 14.08 mL of 0.1594 M NaOH is added to 25.00 mL of 0.1235 M HX (an unknown weak acid), the…

A:

Q: 2. A buffer solution of volume 0.500 L contains 1.68 g NH3 and 4.05 g (NH);SOu. a) What is the pH of…

A: “Since you have asked multiple questions, we will solve the first question [Q2] for you. If you want…

Q: Determine the pH of a solution that is 0.15 M CH3COOH and 0.30 M CH3COONa.

A: GivenThe concentration of Acetic acid = 0.15MThe concentration of sodium acetate = 0.30M

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: A students mistakenly titrates 25.0 mL of a 0.20 M H2SO4 solution, with 62.0 mL of a 0.15 M NaOH…

A:

Q: Calculate the molar concentrations of Ht, CHO2, and unionized, HCHO, in a solution prepared by…

A: Formic acid (HCHO2) is a weak acid that maintains an equilibrium between ionized and unionized form.…

Q: A solution is prepared by adding 100 mL of 1.0 M HC,H,O,(aq) to 100 mL of 1.0 M NaC,H,O,(aq). The…

A: A buffer is a solution of a weak acid and its conjugate base that resists any change in the pH. The…

Q: Determine the pH of a solution that is 0.20 M CH3COOH and 0.15 M CH3COONa.

A: Given :The solutions given are 0.20 M CH3COOH and 0.15 M CH3COONa.We need to pH of the solution.

Q: A 0.3063-g sample of a monoprotic acid neutralizes 27.6 mL of a 0.06917 M KOH solution. Calculate…

A:

Q: Which of the following aqueous solutions are good buffer systems?

A: Buffer solutions:  A solution which resists it's pH by addition of small amount of Strong acid…

Q: Calculate concentration, when 0,2 moles of ammonium carbonate ((NH4)2CO3) is dissolved into water in…

A: The number of moles of a substance is determined as the mass of the substance upon its molar mass.…

Q: Example / What volume of 0.40 M Ba(OH)2 must be added to 50 mL of 0.30 M NAOH to give a solution…

A: Molarity of Ba(OH)2=0.40 M  The volume of Ba(OH)2=y mL Molarity of NaOH= 0.30 M  Volume of NaOH=50…

Q: Calculate the molarity of a NaOH solution if 23.75 mL of NaOH is titrated with 0.475 grams of KHP…

A: Molarity (M) is defined as the number of moles of solute (n) dissolved per volume of the solution (…

Q: A 0.347 g sample of a diprotic acid is dissolved in water and titrated with 0.170 M NaOH. What is…

A: Given, Molarity of NaOH solution = 0.170 M = 0.170 mol/L Note: 1000 mL = 1 L Volume of NaOH solution…

Q: A 0.1310 g sample of an unknown diprotic acid is diluted to 100.00 mL and titrated by using 0.1910 M…

A: Suppose the diprotic acid is H2A. The titration of a diprotic acid with sodium hydroxide will lead…

Q: What volume of 0.4 M Ba (OH)2 must be added to 50 mL of 0.3 M NaOH to give a solution 0.5 M in OH-.

A: Ba (OH)2 dissociate as  Ba(OH)2 -------->Ba2+ + 2OH- Thus one mole barium hydroxide will give 2…

Q: Calculate the molarity of a NaOH solution if 24.50 mL of NaOH is titrated with 0.550 grams of KHP…

A: Number of moles for a given chemical species are defined as the ratio of mass to the molar mass.…

Q: Calculate pH of the solution formed when: b) 25.0 mL of 0.450 M H,SO, is mixed with 25.0 mL of 0.900…

A:

Q: (0.1mol) of NaoH was added to 1L of a solution containing a weak acid and its base salt had the same…

A: Answer: Solution weak acid and its basic salt is a buffer solution whose pH is calculated by…

Q: Consider 20.00 mL of a 0.40M hypothetical weak acid solution, HA. The K, = 3.3 X 106 for this weak…

A: Given: Volume of weak acid, HA = 20.00 mL Molarity of HA = 0.40 M Volume of NaOH = 20.00 mL Molarity…

Q: A 0.590 g sample of a diprotic acid is dissolved in water and titrated with 0.160 M NaOH. What is…

A:

Q: For the determination of basic species in 0.1878 g Talcid sample; 20 mL of 0.1009 M HCl solution was…

A:

Q: By titration it is found that 35.7 mL of 0.101 M NaOH(aq) is needed to neutralize 25.0 mL of…

A: The concentration of the HCl solution after neutralisation with sodium hydroxide is determined as,

Q: A titration experiment required 23.50 mL of NaOH to neutralize KHP. If the concentration of the base…

A: The given KHP is a monoprotic acid. The balanced chemical equation between KHP and NaOH is as…

Q: Calculate the molarity of a NaOH solution if 25.85 mL of NaOH is titrated with 0.425 grams of KHP…

A: Molarity is number of moles of solute per liter of solution. It is the unit of concentration.…

Q: Calculate [OH]in a solution obtained by adding 1.00 g solid KOH to 1.00 L of 10.0 M NH3. (Kb of NH3…

A: The mass of KOH added to 1.00 L of 10.0 M NH3 is 1.00 g. The dissociation constant of NH3 is…

Q: . Calculate the resulting pH when 1.00 L of 1.00 M H,SO4 is added to a tank containing 1.00 × 107 L…

A: The dilution of base solution increases the volume of solution and also alter the molarity of…

Q: The pH of a solution produced when 20 ml of 0.1 M acetic acid is mixed with 5 ml of 0.5 M potassium…

A:

Q: If a buffer solution is 0.280 M in a weak acid (?a=1.6×10−5) and 0.510 M in its conjugate base, what…

A:

Q: A 29.5 mL sample of 0.258 M ethylamine, C2H5NH2, is titrated with 0.340 M hydrochloric acid. After…

A: Given- Volume of ethylamine=29.5mL  Concentration of ethylamine =0.258M Volume of hydrochloric acid=…

Q: What is the pH of a solution that is prepared by adding 30.23 mL of 1.77 M NaOH to 0.646 L of 0.476…

A: THIS WILL FORM AN ACIDIC BUFFER AS THE AMOUNT OF WEAK ACID(HN02)WILL REMAIN IN EXCESS AFTER REACTION…

Q: If 10 mL of 0.1 M hypothetical acid, HA, is added with 10 mL of 0.1 M of the salt of its conjugate…

A: Answer: The mixture of acid HA and its conjugate base XA will be a buffer solution.

Q: Calculate the pH of a 0.10-M solution of aluminum chloride, which dissolves completely to give the…

A: The hydration of aluminum chloride to furnish [Al(H2O)6]3+ ion is expressed as follows:…

Q: How many milliliters of 0.2500M Ba(OH)2 must be added to 75.00ml of 0.3000N NaOH in order that the…

A: When a base with normality N1 and volume V1 is mixed with another base of normality N2 and volume V2…

Q: For the determination of basic species in 0.1878 g Talcid sample; 20 mL of 0.1009 M HCl solution was…

A:

Q: The pH of a 0.800 M aqueous solution of a weak acid is 1.99. What is the value of Ka for this acid?

A: Given  pH = 1.99 Concentration (c) = 0.800 M Ka =?

Q: A CHM 122 student combines 42.2 mL of 0.413 MHBR with 32.7 mL of 0.384 M KOH. What is the pH of the…

A:

Q: Determine the pH of a solution created by dissolving 0.255 g of magnesium hydroxide (MW = 58.3…

A: Mass of magnesium hydroxide=0.255 g MW= 58.3g/mol Volume=325 mL pH of solution=?

Q: 4. When 14.08 mL of 0.1594 M NaOH is added to 25.00 mL of 0.1235 M HX (an unknown weak acid), the…

A: 4. Given that : The volume of NaOH = 14.08 mL The molarity of NaOH = 0.1594 M The volume of weak…

Q: many mL of 0.2016 M KOH would be expected to be used in the titration of 0.3266 g of a diprotic acid…

A: Given -> Molarity of KOH = 0.2016 M Weight of diprotic acid = 0.3266 gm Molar mass of diprotic…

Q: If a 0.11 g sample of a weak acid requires 25.30 ml of 0.1036 M NaOh to reach an equivalence point,…

A: The reaction between unknown weak acid and NaOH can be written as HA + NaOH →NaA + H2O The reaction…

Q: Lactic acid has a K. of 2.502 x 103. A solution contains 0.275 M lactic acid and 0.375 M sodium…

A: Buffer solution: The mixture of lactic acid and sodium lactate act as a buffer solution. The…

Q: Consider a solution that is 0.046 M HF and 0.022 M NaF. 1) What is the pH of this solution? 2) What…

A: Given: Concentration of HF = 0.046 M And concentration of NaF = 0.022 M

Q: When a 20.9 mL sample of a 0.387 M aqueous hydrofluoric acid solution is titrated with a 0.372 M…

A: Given,  Volume of HF in mL = 20.9 mL  Molarity of HF = 0.387 M  Molarity of Ba(OH)2 = 0.372 M  What…

Q: If 0.75 g of a monoprotic weak acid required 22.50 mL of 0.510 M NaOH to titrate it, what is the…

A: Interpretation-  To determine the molar mass of acid when 0.75 g of a monoprotic weak acid required…

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.