the ph of a solution is a measure of the quantity of hydrogen atoms (h) in the solution. it is given by the formula $f(x) = -\log x$

in the formula, $x = \text{h}^+$, the molar concentration of hydrogen atoms, or the number of moles of hydrogen atoms per liter of solution.

the approximate molar concentration of several chemicals are given. find the ph of each. use the calculator and round to the nearest tenth, if necessary.

oven cleaner: $\text{h}^+ = 10^{-13}$ $\text{ph} = $
water: $\text{h}^+ = 0.0000007$ $\text{ph} = $
blood: $\text{h}^+ = 0.00000004$ $\text{ph} = $
vinegar: $\text{h}^+ = 0.0063$ $\text{ph} = $

Question

the ph of a solution is a measure of the quantity of hydrogen atoms (h) in the solution. it is given by the formula $f(x) = -\log x$

in the formula, $x = \text{h}^+$, the molar concentration of hydrogen atoms, or the number of moles of hydrogen atoms per liter of solution.

the approximate molar concentration of several chemicals are given. find the ph of each. use the calculator and round to the nearest tenth, if necessary.

oven cleaner: $\text{h}^+ = 10^{-13}$ $\text{ph} = $
water: $\text{h}^+ = 0.0000007$ $\text{ph} = $
blood: $\text{h}^+ = 0.00000004$ $\text{ph} = $
vinegar: $\text{h}^+ = 0.0063$ $\text{ph} = $

Accepted Answer

{ "quality": "clear", "question_count": 4, "skills_matched": [ "step_cot", "table_formatter", "explain_then_answer", "tutor", "mastery_adaptive_brevity" ], "needs_drawing": false, "concepts_used": [ "pH Scale Calculations" ], "new_concepts": [], "current_concepts": [ "pH Scale Calculations", "Logarithmic Evaluation" ] } ## Calculate pH of Oven cleaner Using the *pH Scale Calculations* knowledge point $$ \begin{aligned} x &= 10^{-13}\ \text{pH} &= -\log(10^{-13}) = -(-13) = 13 \end{aligned} $$ ## Calculate pH of Water Using the *pH Scale Calculations* knowledge point $$ \begin{aligned} x &= 0.0000007 = 7 \times 10^{-7}\ \text{pH} &= -\log(7 \times 10^{-7}) \approx 6.1549 \approx 6.2 \end{aligned} $$ ## Calculate pH of Blood Using the *pH Scale Calculations* knowledge point $$ \begin{aligned} x &= 0.00000004 = 4 \times 10^{-8}\ \text{pH} &= -\log(4 \times 10^{-8}) \approx 7.3979 \approx 7.4 \end{aligned} $$ ## Calculate pH of Vinegar Using the *pH Scale Calculations* knowledge point $$ \begin{aligned} x &= 0.00063 = 6.3 \times 10^{-4}\ \text{pH} &= -\log(0.0063) \approx 2.2007 \approx 2.2 \end{aligned} $$ | Substance | pH | |---|---| | Oven cleaner | $13$ | | Water | $6.2$ | | Blood | $7.4$ | | Vinegar | $2.2$ | { "subject": "Mathematics", "question_type": "Fill-in-the-blank", "knowledge_point": [ "Mathematics", "Algebra", "pH Scale Calculations" ] }

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Calculate pH of Oven cleaner

Calculate pH of Water

Calculate pH of Blood

Calculate pH of Vinegar

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