A 5.65 −g sample of a weak acid with Ka=1.3×10−4 was combined with 4.90 mL of 6.20 M NaOH and the resulting solution was diluted to 750 mL. The measured pH of the solution was 4.15. What is the molar mass of the weak acid?

Q: The following 4 questions involve the titration of a 50.00 mL sample of 0.200 M chlorous acid,…

A: pH - It is the negative logarithm of the hydrogen ion concentration of a solution.  Given:- Ka =…

Q: Calculate the pH of the solution resulting from the addition of 75.0 mL of 0.15 M KOH to 35.0 mL of…

A:

Q: 30.0 ml of 0.1 M NaOH is mixed with 20.0 ml of 0.1 M Ba(OH)2 and 20.0 ml of 0.2 M HClO4. What is the…

A: In this question, we want to determine the the pH of the resulting solution.  You can see details…

Q: What is the change in pH when 0.0450 mol of NaOH is added to 1.00 L of a solution that is 0.100 M in…

A: Given- Concentration of NH3 = 0.100 M concentration of NH4Cl = 0.100 M Volume of solution = 1.00 L…

Q: What is the pH of a solution prepared by dissolving 1.00 g of the weak acid HA (molar mass = 138.95…

A: We will calculate the number of moles of each reactant and then draw ICE table to calculate pH of…

Q: 0.800 grams of solid barium hydroxide, Ba(OH)2, is added to enough water to prepare 250.0 mL of…

A:

Q: solution is prepared by mixing 500 mL of 0.1 M HNO3 with 500 mL of 0.1 M Ca(OH)2. What is the pH of…

A: We will calculate pH by the help of given information

Q: In the laboratory, a general chemistry student measured the pH of a 0.458 M aqueous solution of…

A: A numerical problem based on pH calculation, which is to be accomplished.

Q: A 245.0 mL sample of 0.15 M Ba(OH)2 is added to 438. mL of 0.20 M HNO3. What is the pH of the…

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Q: A student following the procedure in this experiment prepared a solution by allowing 16.00 mL of a…

A:

Q: If 31.4 mL of a 0.75 M NaOH solution is added to a 47.1 mL sample of a 0.75 M weak acid, HA, what is…

A: Molarity of NaOH, M=0.75 M Volume of NaOH, V=31.4 mL Millimoles of NaOH=M x V (in mL)= 0.75 x 31.4…

Q: What is the pH of the solution which results from mixing 0.08 mol NH3 and 0.03 mol HCl? (Ka for NH4+…

A:

Q: What is the pH of solution prepared by mixing 25.0 mL of a 0.0030 M KOH(aq) with 15.0 mL of a 0.0020…

A:

Q: Acid rain is due to the dissolution of sulfur oxide (SO3) present in contaminated areas in the…

A: The reactions taking place are-

Q: What is the final pH when 0.032 mol of NaOH is added to 0.422 L of a solution containing 0.428M…

A: pH = pKa + log[C3H5O2-]/[HC3H5O2] Number of mol = Molarity x Volume (L)

Q: Calculate the pH in the solution formed by adding 10.0 mL of 0.050 M NaOH to 40.0 mL of 0.0250 M…

A: The number of moles of benzoic acid and NaOH in the solution can be calculated using equation (1),

Q: Calculate the pH of 0.17M propanoic acid CH,CH,COOH, found in the sample analysis of sewage water.…

A:

Q: A solution is made by dissolving 26.5 g of LIC3H5O2 in 500.0 mL of water. Using Kb(C3H5O2) = 7.7 x…

A: Given: The mass of LiC3H5O2 = 26.5 g The volume of the solution = 500.0 mL The Kb of C3H5O2- = 7.7 ×…

Q: If 34.6 mL of a 0.68 M NaOH solution is added to a 51.9 mL sample of a 0.68 M weak acid, HA , what…

A: 34.6 mL of a 0.68 M NaOH solution is added to 51.9 mL sample of a 0.68 M weak acid, HA (ka = 1.8 x…

Q: 4. Explain how you determine the pH when 15 ml of 0.100 M HCI is added to 25 ml of 0.080 M NH3 (Kp =…

A: 4.pH can be calculated using Henderson - Hasselbach equation.

Q: A student added 1.78g of Ca(OH)2(9) to 0.250 L of 0.200 molL"' HNO3(aq)- The mixture was carefully…

A: We have to calculate the pH of solution.

Q: What is the pH of 0.0100 M potassium phthalate (K2P)?

A: The acid ionization constant, Ka of potassium hydrogen phthalate (KHP) is 3.91×10-6. The dipotassium…

Q: Calculate the pH of the solution resulting from the addition of 10.0 mL of 0.10 M NaOH to 50.0 mL of…

A: NaOH is a base and HCN is an acid. They both react to form salt and water. The ions contributing to…

Q: find the pH of the solution Ca (OH) 2, which is obtained when dissolving 0.5 grams of Ca (OH) 2 in 1…

A: We can find the concentration of Calcium hydroxide using moles and volume. Then we know we have…

Q: a) Calculate [H3oʻ], [C2H3O2¯ ] and [HC2H3O2] for a solution prepared by mixing 35.0 mL of o.10 M…

A: The number of moles of acetic acid in 35.0 mL of 0.10 M acetic solution and the number of moles of…

Q: Benzoic acid, C6H5COOH, dissociates in water as shown in the equation below.  A 40.0 mL sample of an…

A: Weak acid and strong base titration: The direct transfer of protons from the weak acid to the…

Q: 2. Calculate the pH of the solution that results when 198 mL of 0.1 M of NaOH was added over 100 mL…

A:

Q: 2. If you make a solution by mixing 25.mL of 0.50 M acetic acid (CH3COOH) and 25 mL of 0.30 M sodium…

A: Given,  [CH3COOH] = 0.50 M  Volume of CH3COOH = 25 mL  [CH3COONa] = 0.30 M  Volume of CH3COONa = 25…

Q: Calculate the pH of a mixture containing 0.23 M HONH2 and 0.44 M HONH3Cl. (Kb = 1.1 × 10–8)  What…

A:

Q: Calculate the pH of the solution formed when 45.0 mL of 0.100 M NaOH is added to 50.0 mL of 0.100 M…

A: NaOH will react completely with acid CH3COOH as its a strong base NaOH + CH3COOH -------->…

Q: Calculate the pH of the solution that results when 0.093 g Mg(OH)2 is mixed with 75.0 mL of 0.0500 M…

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Q: 20 ml of 0.2 M NaOH solution be treated with 40 ml of 0.2 M acetic acid solution to give 60 ml.…

A: An acidic buffer is defined as an aqueous solution that consists of a mixture of a weak acid and its…

Q: Chemistry The label of an energy drink states that it contains approximately 80 mg of caffeine…

A: Molecular weight of caffeine = 8×12+10×1+4×14+2×16=194 g/mol Weight of caffeine = 80 mg = 80×10-3g…

Q: Calculate the pH of the solution when 45.0 mL of 0.25 M HNO2 is mixed with 45.0 mL of 0.35 M NaOH.…

A:

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: Calculate the pH and pOH of the mixture of 10.0 mL 0.0345 M HCl and 10.0 mL 0.000890 M Sr(OH)2.

A:

Q: What is the pH of a mixture that contains 0.80 M Ca(OH)2 and 0.80 M LiOH?

A: Calcium hydroxide and lithium hydroxide are strong bases and it dissociates completely in solution.…

Q: 10. 0.02 mole of NH,OH and 0.03 mole of NH,Cl are mixed in 300 ml, what is the pH of the solution?…

A: this solutions form a basic buffer solution.

Q: Calculate the pH of the solution that results when 16.0 mL of 0.46 M nitric acid (strong acid),…

A: We have to calculate the pH of given solution.

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: The correct indicator was added to 25.00 ml of a 0.1345 M solution of propanoic acid (CH,CH;COOH)…

A: Propanoic acid is titrated with sodium hydroxide.

Q: calculate the pH of the solution created by mixing 400 ml of 0.2 N H2SO4 solution with 600 ml of 0.3…

A: Given, Volume of H2SO4 = 400 ml = 0.4 L Volume of Ca(OH)2 = 600 ml = 0.6 L Normality of H2SO4 = 0.2…

Q: What is the pH at 25 degrees celsius of a solution that results from mixing equal volumes of a 0.05…

A: Given, 0.05 M solution of ammonia and a 0.025 M solution of hydrochloric acid. The molarity of…

Q: 100 ml of 1 M CH3CO2H solution and add 4 g of NaOH. Calculate the pH of the solution?

A: Given data:

Q: 1) Calculate the pH of a solution prepared by dissolving 1.60 g of sodium acetate, CH3COONa, in 64.0…

A: Given; The given mass of CH3COONa, (W)  = 1.6 g. The molar mass of CH3COONa, (M) = 82.0343 g/mol.…

Q: If the KbKb of a weak base is 1.6×10−6,1.6×10−6, what is the pH of a 0.18 M0.18 M solution of this…

A: Concentration of the solution is 0.18 M. Kb = 1.6 x 10-6 The Ka value is calculated by following…

Q: What is the molarity of a solution made by dissolving 3.4 g of Ba(OH)2 in enough water to make 450.…

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.