Answered: An aqueous solution is 6.00 % methanol…

General, Organic, and Biological Chemistry

7th Edition

ISBN:9781285853918

Author:H. Stephen Stoker

Publisher:H. Stephen Stoker

Chapter8: Solutions

Section: Chapter Questions

Problem 8.64EP

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An aqueous solution is 6.00 % methanol CH3OH by mass with a density = 0.988 g/mL. What is the molarity of CH3OH in this solution?

Calculate the number of grams of water that must be added to 60.0 g of glucose (C6H12O6) in the preparation of 2.00 m

What is the mole fraction of HCl in 20% aqueous HCl solution?

ACID AND BASES

Calculate:

A 0.00300 M solution of an acid is 12% ionised. Calculate the acid ionization constant Ka.
A 0.0500 M solution of a base is 7.5% ionized. Calculate the base ionization constant Kb.

3.What is the molar hydronium ion concentration in solutions with each of the following pH values?

2.05 b. 4.88 c. 6.75 d. 11.33 e. 14.00

Acid A has a pKa value of 5.71, and acid B has a pKa value of 5.30. Which of the two acids is the weaker?

CALCULATE

Some communities add sodium fluoride to their water because of its benefits to the teeth. What is the percent m/m of NaF if 64.6 mg of solute is dissolved in every 40,000 g of water. (Put answer in scientific notation)

Saline solution is often used in hospitals and by optometrists. It is a 0.92% (m/v) aqueous solution of sodium chloride. How many grams of NaCl would be found in 1.59 liters of saline solution

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