جموعة ٥ : 50 ml of an ammonia solution with a specific weight of 1.42 and a purity of 52.2% mixed with another 50 ml of an ammonia solution of a specific weight of 1.83 and a purity of 95.6% by weight, then the volume of the solution was made 1.5 liters. Calculate the pH of this solution and show the change in it if 100 ml of it was taken from it and diluted to 250 ml with distilled water. If you know that the molecular weight of ammonia is 17 and the ammonia ionization constant (Kb) is 1.75x10-5 *

Q: The following 4 questions involve the titration of a 100.00 mL sample of 0.500 M methylamine,…

A:

Q: HA is a weak acid. B1 and B2 are weak bases. Two acid/base neutralization experiments are performed…

A:

Q: A chemist must prepare 800.0 mL of potassium hydroxide solution with a pH of 13.50 at 25 °C. He will…

A: Given :  Volume of solution = 800 ml  pH of the solution = 13.50    As pervthe guidelines only one…

Q: We measured the pH of a 0.010 M formic acid (HCOOH ) solution and calculated the percent ionization…

A:

Q: HA is a weak acid. B1 and B2 are weak bases. Two acid/base neutralization experiments are performed…

A:

Q: 1.2 g of the strong base NaOH are dissolved in water and diluted to 50.0 mL. What is the pH of this…

A: Mass of NaOH = 1.2 gVolume of solution = 50 mL = 50 mL x 10-3 L/mL = 0.050 L

Q: When answering this problem, report the answer with the appropriate number of significant figures…

A: Given: molarity of stock solution=M1=2.400×10-1Mvolume of stock solution=V1=5 mLvolume of new…

Q: 50 ml of an ammonia solution with a specific weight of 1.42 and a purity of 52.2% mixed with another…

A: For the 1st ammonia solution total volume 50 ml, specific weight = 1.42; purity of the solution is…

Q: A chemist dissolves 422. mg of pure sodium hydroxide in enough water to make up 90. mL of solution.…

A:

Q: A chemist dissolves 369. mg of pure barium hydroxide in enough water to make up 60. mL of solution.…

A: Given: mass of Ba(OH)2=369 mg                                =0.369 gvolume of solution=60 mL To…

Q: Assuming the source of the acid is HCl, what is the pH of the lake water?

A: We have to find pH of lake water

Q: A chemist dissolves 705. mg of pure perchloric acid in enough water to make up 160. mL of solution.…

A: Given information, Mass of pure perchloric acid = 705. mg = 0.705 g  As ( 1g = 1000 mg ) Volume of…

Q: Calculate the pH of the solution that results from mixing 67.0 mL of 0.061 MHCN(aq) with 33.0 mL of…

A: HCN is a weak acid and CN− is its conjugate base. An acidic buffer is formed by mixing an aqueous…

Q: What is the lactic acid concentration (in M) of the titrated sample? b. Determine the lactic acid…

A: Volume of milk = 10.0 mL First dilution = 250 mL Aliquot volume = 15.0 mL Volume used for titration…

Q: A chemist dissolves 491. mg of pure sodium hydroxide in enough water to make up 60. mL of solution.…

A: The given data is as follows:       The mass of sodium hydroxide = 491 mg = 0.491 g The volume of…

Q: You have a 48.5 g mixture that contains potassium propanoate (CH3CH2COOK) and Propanoic acid…

A:

Q: A chemist dissolves 866. mg of pure perchloric acid in enough water to make up 50. mL of solution.…

A: Given: Mass of perchloric acid (HClO4) = 866 mg =866×10-3 g Volume of the solution = 50 ml = 50×10-3…

Q: If a buffer solution is made from 300.0 mL of 1.6 M aniline salt mixed with 250.0 mL of 2.0 M…

A: Given: Concentration of aniline salt = 1.6 M Concentration of aniline = 2.0 M Volume of aniline salt…

Q: A chemist dissolves 172. mg of pure barium hydroxide in enough water to make up 120. mL of solution.…

A: Molarity(M) of a solution is defined as the number of moles of solute present in the 1 liter of the…

Q: A chemist dissolves 508. mg of pure perchloric acid in enough water to make up 400. mL of solution.…

A: Answer: pH of a solution talks about the power of hydrogen ion concentration and its value is equal…

Q: In the laboratory, a general chemistry student measured the pH of a 0.527 M aqueous solution of…

A:

Q: Consider the following data on some weak acids and weak bases: acid name acetic acid hypochlorous…

A:

Q: A student is asked to design an experiment that uses indicators to identify which of three unknown…

A: Data and solution is done in step 2.

Q: A 0.4-L unbuffered solution needs the pH adjusted from 10.0 to 3.0. How many microliters of a 5…

A:

Q: A chemist dissolves 895. mg of pure hydroiodic acid in enough water to make up 260. mL of solution.…

A:

Q: pH: 3 [H*]: 10-3 M [ОН ]: 10-11 м 14 10-7 10-7 10-14 10-14 Dip litmus paper into the solution or add…

A: A universal indicator is a pH indicator made of a solution of several compounds that has smooth…

Q: Will 260.0 milligrams of calcium carbonate raise the pH of 75.0 milliliters of stomach fluid from a…

A: Calcium carbonate is CaCO3 which is a diacidic base. The balanced equation for the neutralization…

Q: Calculate the pH of the solution that results from mixing 74.0 mL of 0.058 MHCN(aq) with 26.0 mL of…

A: HCN is a weak acid and NaCN is the salt of conjugate base of HCN. So, it is the buffer solution. pH…

Q: A chemist dissolves 704. mg of pure hydroiodic acid in enough water to make up 250. mL of solution.…

A:

Q: A chemist must prepare 500.0 mL of sodium hydroxide solution with a pH of 13.00 at 25 °C. He will do…

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.