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pH Calculator

⚗️pH Calculator

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We're working on a comprehensive educational guide for the pH Calculator in your language. The content below is shown in English.

Що таке pH Calculator?

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pH is a logarithmic scale measuring the acidity or alkalinity of a solution, ranging from 0 (highly acidic) to 14 (highly alkaline), with 7 being neutral (pure water at 25°C). Each unit represents a 10× change in hydrogen ion concentration.

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Формула

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f(x)pH = −log₁₀[H⁺] where [H⁺] is the hydrogen ion concentration in mol/L

Опис змінних

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СимволІм'яОдиницяОпис
H10^(−pH)—10^(−pH)
LL value—Variable used in the calculation

Як pH Calculator

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  1. 1pH = −log₁₀[H⁺] where [H⁺] is the hydrogen ion concentration in mol/L
  2. 2[H⁺] = 10^(−pH)
  3. 3pOH = 14 − pH (at 25°C)
  4. 4Acidic: pH < 7 | Neutral: pH = 7 | Alkaline (basic): pH > 7

Розв'язані приклади

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Приклад 1
Дано:[H⁺] = 0.001 mol/L
Результат:pH = 3

−log₁₀(10⁻³) = 3. Acidic (vinegar level)

Приклад 2
Дано:pH = 11
Результат:[H⁺] = 10⁻¹¹ mol/L

Strongly alkaline — bleach, ammonia

Практичне застосування

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Academic homework and exam preparation

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Engineering and architecture calculations

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Everyday measurement tasks around the home

Common pH Values

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SubstancepHCategory
Battery acid0Extremely acidic
Gastric acid (stomach)1–2Very acidic
Vinegar / lemon juice2–3Acidic
Coffee5Mildly acidic
Pure water7Neutral
Baking soda9Mildly alkaline
Bleach12Strongly alkaline

Часті запитання

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Q

What is Ph?

A

pH is a logarithmic scale measuring the acidity or alkalinity of a solution, ranging from 0 (highly acidic) to 14 (highly alkaline), with 7 being neutral (pure water at 25°C). Each unit represents a 10× change in hydrogen ion concentration

Q

How accurate is the Ph calculator?

A

The calculator uses the standard published formula for ph. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

Q

What units does the Ph calculator use?

A

This calculator works with inches, Celsius. You can enter values in the units shown — the calculator handles all conversions internally.

Q

What formula does the Ph calculator use?

A

The core formula is: pH = −log₁₀[H⁺] where [H⁺] is the hydrogen ion concentration in mol/L. Each step in the calculation is shown so you can verify the result manually.

Лише для інформаційних цілей. Цей інструмент не замінює професійну медичну консультацію, діагностику або лікування. Завжди консультуйтеся з кваліфікованим медичним фахівцем.
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pH vs pOH

Mathematically verified
Reviewed October 2026
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