CHEM 110 Quiz 4 (Answer all questions. Show all your works for questions 1 and 2. Total points 25) 1. When 100 milligram (mg) of an unknown substance is dissolved in 100 mL of an aqueous solution, the...

1 answer below »

CHEM 110 Quiz 4
(Answer all questions. Show all your works for questions 1 and 2. Total points 25)
1. When 100 milligram (mg) of an unknown substance is dissolved in 100 mL of an aqueous solution, the concentration of that solution has a molarity, 0.1 M. Calculate the molar mass of that unknown substance? (6 points)
2. What is the molality, m of a solution containing 300 grams of potassium nitrate (KNO3), a strong electrolyte in 1800 grams of water? (6 points)
3. (i) Write the conjugate acids of the following bases: (4 points)
(a) H2PO3 2—
(b) HSO3–
(c) NH3
(d) CN—
XXXXXXXXXXii) Write the conjugate bases for the following acids: (3 points)
(e) HS—
(f) H2SO4
(g) HCO3—

4. (a) Write the equation for the dissociation of the weak acid, HCN in water. (3 points)
(b) Write the acid dissociation expression, Ka for hydrogen sulfite, HSO3— . (3 points)

chem-110-quiz-4-fall-2021-1-3utzl4zt.docx

Answered 49 days After Dec 02, 2021

Solution

Dr Shweta answered on Jan 20 2022

117 Votes

SOLUTION.PDF

CHEM 110 Quiz 4 (Answer all questions. Show all your works for questions 1 and 2. Total points 25) 1. When 100 milligram (mg) of an unknown substance is dissolved in 100 mL of an aqueous solution, the...

Solution

Answer To This Question Is Available To Download

Related Questions & Answers

Submit New Assignment