239 Date Name Locker Number Please print Iset rom. frst Experiment 17 PRELIMINAR

Question

239 Date Name Locker Number Please print Iset rom. frst Experiment 17 PRELIMINARY EXERCISES Aclds, Bases, pH, Hydrolysis, and Buffers 1. What property of a solution is described by its pH? 2. A solution has a pH of 8.7. What is the pOH of this solution? a. b. Is the solution acidic, basic, or neutral? 3. Sohution A has a hydrontum ion concontration of 8.8 x 10 M. Solution B has a .5 × 10-4 M. hydronium ion concentration of 2 a. Which solution has the larger hydronium ion concentration? b. Which solution has the greater pH? Estimate the pH of an aqueous solution of each of the following compounds by indicating 4 whether the pH is greater than 7 (>7), less than 7 ), or abou17(-7). b. Mg(OH2 c. NaNO, d. HNO e. NH) - Which solution has the lower pH? a. 0.1 M HCI or 0.1 M HC,H,O b. 0.1 M NaOH or 0.1 M NH c. 0.1 M Na,CO, or 0.1 M NaCl 5.

Explanation / Answer

Q1

acidity is measured by pH

if ph < 7, it is acidic

if ph = 7 neutal

and if ph > 7, this is basic

Q2

a)

pOH = !4-pH = 14-8.7 = 5.3

since pH > 7, this is BASIC

Q3

a)

2.5*10^-4 >> 3.8*10^-8

b)

greater ph --> lowe [H3O+], so 3.8*10^-8 has lower

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.