See what makes each Mac notebook and desktop different. And find the one that’s perfect for your life, your work, and your budget.
- StatisticS is available for all Windows and Mac OS, in English, French or Spanish language. Version 4.0 may include unspecified updates, enhancements, or bug fixes. Full Specifications.
- PHStat Version 4.1 Readme PHStat provides a software assist to help you create Excel worksheet solutions to statistical problems. You make entries in dialog boxes and PHStat creates the solutions for you. You avoid the unnecessary clerical errors that can arise from creating worksheets from scratch or from manually modifying worksheet templates.
Calculating pH
The pH of a substance is defined by:
pH = −log[H+]
where the quantity [H+] represents the concentration of hydrogen ions, measured in moles per liter, in the substance.
- A substance with a pH < 7 is considered an acid
- A substances with a pH > 7 is considered a base
Find the pH of milk whose concentration of hydrogen ions, [H+] = 4 x 10-7 moles/liter.
Solution #1:
Using pH =
−log[H+]:pH = −log(4 x 10-7)
pH ≈ −(−6.4)
pH ≈ 6.4
Example #2:
Find the concentration of hydrogen ions, [H+], for vinegar with a pH = 3.1.
Solution #2:
Phstat For Mac Excel 2016
Using pH = −log[H+]:
3.1 = −log[H+]
Multiplying each side by −1:
−3.1 = log[H+]
Raising both sides to power of 10:
10−3.1 = [H+]
[H+] ≈ 7.94 x 10-4 moles/liter
3.1 = −log[H+]
Multiplying each side by −1:
−3.1 = log[H+]
Raising both sides to power of 10:
10−3.1 = [H+]
[H+] ≈ 7.94 x 10-4 moles/liter
Ph Stat For Mac
| Name | Formula | step | pKa |
|---|---|---|---|
| Acetic acid | C2H4O2 | 4.756 | |
| Acrylic acid | C3H4O2 | 4.25 | |
| Ammonia | NH3 | 9.25 | |
| Arsenic acid | H3AsO4 | 1 | 2.26 |
| 2 | 6.76 | ||
| 3 | 11.29 | ||
| Arsenious acid | H3AsO3 | 9.29 | |
| Boric acid | H3BO3 | 1 | 9.27 |
| 2 | 14 | ||
| Carbonic acid | H2CO3 | 1 | 6.35 |
| 2 | 10.33 | ||
| Chlorous acid | HClO2 | 1.94 | |
| Chromic acid | H2CrO4 | 1 | 0.74 |
| 2 | 6.49 | ||
| Citric acid | C6H8O7 | 1 | 3.13 |
| 2 | 4.76 | ||
| 3 | 6.40 | ||
| Cyanic acid | HOCN | 3.46 | |
| Diphosphoric acid | H4P2O7 | 1 | 0.91 |
| 2 | 2.10 | ||
| 3 | 6.70 | ||
| 4 | 9.32 | ||
| Formic acid | CH2O2 | 3.75 | |
| Germanic acid | H2GeO3 | 1 | 9.01 |
| 2 | 12.3 | ||
| Hydrazine | N2H4 | 8.1 | |
| Hydrazoic acid | HN3 | 4.6 | |
| Hydrogen cyanide | HCN | 9.21 | |
| Hydrogen fluoride | HF | 3.20 | |
| Hydrogen peroxide | H2O2 | 11.62 | |
| Hydrogen selenide | H2Se | 1 | 3.89 |
| 2 | 11.0 | ||
| Hydrogen sulfide | H2S | 1 | 7.05 |
| 2 | 19 | ||
| Hydrogen telluride | H2Te | 1 | 2.6 |
| 2 | 11 | ||
| Hydroxylamine | H2NOH | 5.94 | |
| Hypobromous acid | HOBr | 8.55 | |
| Hypochlorous acid | HOCl | 7.40 | |
| Hypoiodous acid | HIO | 10.5 | |
| Iodic acid | HIO3 | 0.78 | |
| Nitrous acid | HNO2 | 3.25 | |
| Orthosilicic acid | H4SiO4 | 1 | 9.9 |
| 2 | 11.8 | ||
| 3 | 12 | ||
| 4 | 12 | ||
| Oxalic acid | C2H2O4 | 1 | 1.25 |
| 2 | 3.81 | ||
| Perchloric acid | HClO4 | -1.6 | |
| Periodic acid | HIO4 | 1.64 | |
| Phosphonic acid | H3PO3 | 1 | 1.3 |
| 2 | 6.70 | ||
| Phosphoric acid | H3PO4 | 1 | 2.16 |
| 2 | 7.21 | ||
| 3 | 12.32 | ||
| Selenic acid | H2SeO4 | 2 | 1.7 |
| Selenous acid | H2SeO3 | 1 | 2.62 |
| 2 | 8.32 | ||
| Sulfamic acid | H2NSO3H | 1.05 | |
| Sulfuric acid | H2SO4 | 1 | --- |
| 2 | 1.99 | ||
| Sulfurous acid | H2SO3 | 1 | 1.85 |
| 2 | 7.2 | ||
| Telluric(VI) acid | H6TeO6 | 1 | 7.68 |
| 2 | 11.0 | ||
| Tellurous acid | H2TeO3 | 1 | 6.27 |
| 2 | 8.43 | ||
| Tetrafluoroboric acid | HBF4 | 0.5 | |
| Thiocyanic acid | HCNS | -1.8 | |
| Test | TEST | 1 | --- |
| 2 | --- | ||
| 3 | 1.43 | ||
| 4 | 10.43 |