Concept explainers
MATHEMATICAL Calculate the hydrogen ion concentration,
(a) Blood plasma, pH 7.4
(b) Orange juice, pH 3.5
(c) Human urine, pH 6.2
(d) Household ammonia, pH 11.5
(e) Gastric juice, pH 1.8
Interpretation:
The hydrogen ion concentration for each of the following materials:
(a) Blood plasma, pH 7.4
(b) Orange juice, pH 3.5
(c) Human urine, pH 6.2
(d) Household ammonia, pH 11.5
(e) Gastric juice, pH 1.8
Concept introduction:
The pH (potential of hydrogen) can be mathematically defined as the negative logarithm of the H+ (hydrogen ion) concentration within an aqueous solution. In chemistry, it is used to determine the acidity or the basicity of a solution.
Answer to Problem 23RE
Solution:
a.
b.
c.
d.
e.
Explanation of Solution
(a) The pH of blood plasma is 7.4. The concentration of H+ in blood plasma can be calculated as follows:
So, the hydrogen ion concentration of blood plasma will be
(b) The pH of orange juice is 3.5. The hydrogen ion concentration of orange juice can be calculated as follows:
So, the hydrogen ion concentration of blood plasma will be
(c) The pH of human urine is 6.2. The hydrogen ion concentration of human urine can be calculated as follows:
So, the hydrogen ion concentration of human urine will be
(d) The pH of household ammonia is 11.5. The hydrogen ion concentration of household ammonia can be calculated as follows:
So, the hydrogen ion concentration of household ammonia will be
(e) The pH of gastric juice is 1.8. The hydrogen ion concentration of gastric juice can be calculated as follows:
So, the hydrogen ion concentration of gastric juice will be
Therefore, it can be concluded that the H+ concentration of blood plasma will be
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Chapter 2 Solutions
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