13) a ph is a logarithmic scale that is used to describe the relative concentration of the carbon ion…
13) a ph is a logarithmic scale that is used to describe the relative concentration of the carbon ion. \ntrue \nfalse \n14) because ph is based on logarithms, a decrease of one means the acid is 10 times more acidic, and an increase in one means it is 10 times more basic. \ntrue \nfalse \n15) what is the ph of a 0.0235 m hcl solution? \nhint: ph = - logh+ \n16) what is the ph of a 0.05 m hcl solution? \nhint: ph = - logh+
Answer
13
Brief Explanations:
pH is a logarithmic scale that describes the relative concentration of hydrogen ions ($H^+$), not carbon ions.
Answer:
False
14
Brief Explanations:
Since pH = -log[H⁺], a decrease in pH by 1 means an increase in [H⁺] by a factor of 10 (more acidic), and an increase in pH by 1 means a decrease in [H⁺] by a factor of 10 (more basic).
Answer:
True
15
Explanation:
Step1: Identify hydrogen - ion concentration
HCl is a strong acid and dissociates completely in water. For a 0.0235 M HCl solution, [H⁺]=0.0235 M.
Step2: Calculate pH
Using the formula pH = -log[H⁺], we substitute [H⁺]=0.0235 into the formula. pH = -log(0.0235). pH≈1.63
Answer:
1.63
16
Explanation:
Step1: Identify hydrogen - ion concentration
HCl is a strong acid and dissociates completely in water. For a 0.05 M HCl solution, [H⁺]=0.05 M.
Step2: Calculate pH
Using the formula pH = -log[H⁺], we substitute [H⁺]=0.05 into the formula. pH = -log(0.05). pH = 1.30
Answer:
1.30