pH Calculator

Advanced pH Calculator | Calculator-App.site

Advanced pH Calculator

Calculate pH, pOH, and ion concentrations for chemical solutions.

Calculate pH from H+ Concentration

Hydrogen Ion Concentration [H⁺] (mol/L):

Calculate Ion Concentrations from pH

Enter pH value:

Calculate pOH from OH⁻ Concentration

Hydroxide Ion Concentration [OH⁻] (mol/L):

pH Scale Reference

0

2

4

6

8

10

12

14

Key Formulas

pH = -log₁₀[H⁺]
pOH = -log₁₀[OH⁻]
pH + pOH = 14 (at 25°C)
[H⁺] = 10^-pH
[OH⁻] = 10^-pOH
[H⁺] × [OH⁻] = 1.0 × 10^-14 (at 25°C)

Safety Recommendations

Handling Acids and Bases

Always wear appropriate personal protective equipment (PPE) including gloves, goggles, and lab coat
Work in a well-ventilated area or under a fume hood when handling concentrated solutions
Add acids to water, never water to concentrated acids (to prevent violent reactions)
Know the location of safety showers and eye wash stations

Storage

Store acids and bases separately in approved, chemically resistant containers
Keep concentrated solutions in secondary containment to contain spills
Label all containers clearly with contents, concentration, and hazard information
Store at appropriate temperatures (some solutions may require refrigeration)

Neutralization Procedures

For acid spills: use sodium bicarbonate or other weak base to neutralize
For base spills: use a weak acid like citric acid or vinegar to neutralize
Always neutralize small quantities at a time to prevent violent reactions
Test pH after neutralization (aim for pH 6-8) before disposal
Dispose of neutralized solutions according to local regulations

Emergency Procedures

Skin contact: rinse immediately with copious amounts of water for at least 15 minutes
Eye contact: rinse eyes at eyewash station for at least 15 minutes, holding eyelids open
Inhalation: move to fresh air immediately, seek medical attention if breathing is difficult
Ingestion: do NOT induce vomiting, rinse mouth with water, seek immediate medical attention