Ammonia and oven cleaner are both bases. Their [H+] values are 1.3 x 10 11 (a) Find the pH for ammonia. (b) Find the pH for oven cleaner. (c) Which substance is more basic? Part: 0/3 Part 1 of 3 (a) Find the pH for ammonia. The pH for ammonia is approximately X 5 mol/L and 6.3 × 10 -14 mol/L, respectively.

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Chapter1: Chemical Foundations
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Scientists use the pH scale to represent the level of acidity or alkalinity of a liquid. This is based on the molar concentration of hydrogen ions, [H+]. Since the
values of [H+] vary over a large range, 1 x 10° mole per liter to 1 x 10-14 mole per liter (mol/L), a logarithmic scale is used to compute pH. The formula
pH= -log[H+]
represents the pH of a liquid as a function of its concentration of hydrogen ions, [H+].
The pH scale ranges from 0 to 14. Pure water is taken as neutral having a pH of 7. A pH less than 7 is acidic. A pH greater than 7 is alkaline (or basic).
For this exercise, use the formula for pH. Round pH values to 1 decimal place.
Lemon juice Wine
10⁰
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
10-2
Acidic
10-
10-7
Ammonia
Water
(neutral)
Bleach
10-10 10-12
Alkaline
pH
10-14 [H+1
Transcribed Image Text:Scientists use the pH scale to represent the level of acidity or alkalinity of a liquid. This is based on the molar concentration of hydrogen ions, [H+]. Since the values of [H+] vary over a large range, 1 x 10° mole per liter to 1 x 10-14 mole per liter (mol/L), a logarithmic scale is used to compute pH. The formula pH= -log[H+] represents the pH of a liquid as a function of its concentration of hydrogen ions, [H+]. The pH scale ranges from 0 to 14. Pure water is taken as neutral having a pH of 7. A pH less than 7 is acidic. A pH greater than 7 is alkaline (or basic). For this exercise, use the formula for pH. Round pH values to 1 decimal place. Lemon juice Wine 10⁰ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 10-2 Acidic 10- 10-7 Ammonia Water (neutral) Bleach 10-10 10-12 Alkaline pH 10-14 [H+1
11
Ammonia and oven cleaner are both bases. Their [H+] values are 1.3 × 10¹¹ mol/L and 6.3 × 10-¹4
(a) Find the pH for ammonia.
(b) Find the pH for oven cleaner.
(c) Which substance is more basic?
Part: 0 / 3
Part 1 of 3
(a) Find the pH for ammonia.
The pH for ammonia is approximately
X
3
mol/L, respectively.
Transcribed Image Text:11 Ammonia and oven cleaner are both bases. Their [H+] values are 1.3 × 10¹¹ mol/L and 6.3 × 10-¹4 (a) Find the pH for ammonia. (b) Find the pH for oven cleaner. (c) Which substance is more basic? Part: 0 / 3 Part 1 of 3 (a) Find the pH for ammonia. The pH for ammonia is approximately X 3 mol/L, respectively.
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