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Acids and Bases

PH, Ka

Can someone please walk me through how to do the following problem? Thank you! A typical aspirin tablet contains 324 mg of aspirin (C9O4H8), a monoprotic acid with Ka=2.8 x 10^-4. A monoprotic acid donates a single proton. If you dissolve two aspirin tablets in a 300 ml glass of water, what is the pH of the solution?

Mol/Mol Calculation: Detailed Solution

How many milliliters of 3.00 M hydrochloric acid would be needed to react completely with a milk of magnesia tablet that contains 310 mg of Mg(OH)2? The neutralization reaction produces magnesium chloride, MgCl2, and water.

Tryptophan and Stereoisomerism

Several years ago people who were taking supplements of tryptophan (an essential amino acid that we must take in our food for normal growth and maintenance of a healthy body; without it we could not live) started becoming very ill. Some individuals suggested that tryptophan was what was causing the disease. For most amino acid

Problem Set - Help setting up

1 How many grams of oxygen are required to fill a 4.5 x 103 liter hyperbaric chamber at a pressure of 225 cm Hg and 62 F? If the same quantity of oxygen, was pumped back into a gas cylinder at a pressure of 200 atm and at 75 F, what would the volume be? 2 Any number of green plants can photosynthesize glucose (C6H12O

Acidic and basic solutions

Predict whether aqueous solutions of each of the following salts are acidic, neutral, or basic: Potassium iodide Potassium hydrogen phosphate Are these two kind of similar? I thought that potassium did not react with water. or does it form KOH and then would always be the strongest because OH is the strongest base?

Salt solution: acidic or basic?

Predict whether aqueous solutions of each of the following salts are acidic, neutral, or basic. Sodium hydrogen carbonate In class we just learned to look on the table and see if one was a weak acid or strong base, then decide what the solution would be. However, I can't find some of them on the table so then I believe

Acid/base solution

Predict whether the aqueous solution of the following salt is acidic, neutral, or basic: Potassium hydrogen phosphate

Calculation of buffer solutions

Please show me how to solve this problem, step by step. 0.50 molar solutions of the following weak acids HOCL and NaOCL are available. What volume in mL of a 1.00 molar NaOH solution should be added to 1.00 L of the above acid solution to create a buffer with a pH of 7.16? Ka = 3.5 x 10-8, Pka = 7.46

Design experiment to reduce Fe3+ to Fe2+

I just need some help to get started on designing an experiment for a quantitative colorimetric iron assay. We're allowed to use the following items: deionized water 0.02 M feCl3 1,10-phenanthroline ferrozine filter paper test tubes and test tube racks volumetric flasks HCl NaOH digested soil samples undigested s

Titration Conduction

A titration was conducted to determine the percent of acetic acid within vinegar. The reaction of this titration is HC(2)H(3)O(2) --->NaC(2)H(3)O(2) +H(2)O (water) Given Concentration of NaOH 0.2959 M. Final Buret Reading:26.72 mL Initial buret reading :0.02 mL Volume of NaOH added: 2

Molarity and Vinegar

Vinegar is a 5% acid solution, CH3COOH, by mass. What is the molarity of vinegar? Assume that the density of vinegar is 1.00 g/mL.

Solving for the pH of NH3

You have a 0.1 M aqueous solution of NH3 to which you add an equal volume of 0.1 M AgNO3. The Kb is 1.80 x 10-5 and the K formation for [Ag(NH3)2]+ is 1.69 x 10 to the 7th. What is the pH of the original NH3 solution and what is the pH after the addition of AgNO3?

pH for Magnesium

Magnesium hydroxide has a Ksp of 1.8 x 10-11. At what pH will the magnesium from a 0.018 M solution of magnesium nitrate precipitate? In addition, if you take 0.1 mole of Mg(OH)2 and place it in a 100 ml solution of 1.00 x 10-4 M NaF, will MgF2 (Ksp = 6.5 x 10-8) form and if it does how much will form? Ka = 3.53 x 10-4 for HF.

Baking soda + 7Up

What gas is producedd when you add baking soda to soft drinks like: 7Up, Sprite, Orange, Dr. Pepper and Coke? Why does Dr. Pepper produce the most gas? Why does 7Up produce the least gas?

Multiple Choice questions on solubility

1. What is the solubility (in M) of PbCl2 in a 0.15 M solution of HCl? (Ksp PbCl2 = 1.6 x 10-5) a. 7.1 x 10-4 b. 1.1 x 10-4 c. 2.0 x 10-3 d. 1.8 x 10-4 e. 1.6 x 10-5 2. In which aqueous system is PbI2 least soluble? a. H2

Chemistry

1. Given the following table of Ksp values, determine which compound listed has the smallest solubility. compound Ksp CdCO3 5.2 x 10-12 Cd(OH)2 2.5 x 10-14 AgI 8.3 x 10-17

Lab experiment - six prepared solutions

1) This is the scenario: there are six prepared solutions, but the labels are not on the bottles. What are the the solutions in the bottle. The six possible solutions are silver nitrate, barium chloride, copper (II) nitrate, copper(II) sulfate, sodium carbonate, and hydrochloric acid. The results were found by mixing the each so

Determining pH of a solution

A solution was prepared by dissolving 2.3g NaOH in 2.0L water. This solution was then mixed with 1L pH = 1.0 HCl solution. What is the pH of the resulting solution? What is the pOH of the solution? See attached file for full problem description.

Formula associated with problem

Salicylic acid reacts with acetic anhydrate to form aspirin, acetylsalicylic acid. How much aspirin can be produced from the reaction of 100 g of Salicylic acid and 100 g acetic anhydrate? What is the initial formula used to solve this?

Effects of Heat and Acid on Copper

1) What is the effect of heat on an element such as copper? What new substance is formed? What is the effect of heat on a compound such as copper(II) carbonate? What gas is produced.? 2) What is the effect of acid on the following substances and what gas is produced?

Molarity, Mole, Dilution

See the attached file. 1. A sample of concetrated nitric acid has density of 1.41g/ml and contains 70% HNO3, by mass. a. What mass of HNO3 is present per litre of solution?(in g/l) b. What is the molarity of the solution? 2. Calculate each of the following quantities. a. molarity of a solution prepared by diluting 3

Calculating Molarity Functions

Answer these questions: 1. How many grams of NaH2PO4 are needed to react with 38.45 mL of 0.285 M NaOH? NaH2PO4(s) + 2 NaOH(aq) Na3PO4(aq) + 2 H2O(l) 2. How many moles of which reactant are in excess when 356.0 mL of 0.268 M sulfuric acid reacts with 0.590 L of 0.177 M sodium hydroxide to form water and aqueous sodium s

Molarity and pH Calculations

I need some help with this question: What is the molarity of an aqueous hyporomous acid, HOBr, solution that is found to have a pH=5.2? HOBr (aq) + H2O (l) <=> H30(aq) + OBr (aq) pKa= 8.6

Salt formation from neutralization of reaction.

What is the name of the salt formed by the complete neutralization of sulfuric acid with lithium hydroxide? Choices: 1. hydrogen sulfite 2. lithium sulfate 3. lithium hydride 4. lithium sulfide

Acidity and Basicity of Boric Acid

Boric acid, H3BO3, is found in some laundry detergents, antimicrobials, and pesticides. With a Ka = 5.8 x 10^-10 it is a weak acid that behaves as a monoprotic acid. Assume you titrate 20.0 mL of 0.11 M boric acid with 0.100 M NaOH. (Show work) 1. Write the equation: 2. What is the pH of the solution before titration begin

Molar Mass of Organic Compound

You have an unknown organic compound that is soluble in acetic acid. If 39.35g of this compound in 29.95ml of acetic acid (density of acetic acid is 1.0492g/mL) has a freezing point of 8.650 degrees Celsius, what is the molar mass of this organic compound? The freezing point of acetic acid is 16.60 degrees Celsius and the fre