AP Chemistry Calculator

How to Use This Calculator Suite

1. pH Calculator

• Enter the [H⁺] concentration in molarity (e.g., 1.5e-5 for 1.5 × 10⁻⁵ M)
• Calculates pH and identifies if acidic/basic

2. Ideal Gas Law (PV = nRT)

• Enter any three variables (leave one blank to solve for it)
• Solves for pressure (atm), volume (L), moles (mol), or temperature (K)

3. Nernst Equation

• Calculates cell potential (E) given:
  • Standard potential (E°)
  • Reaction quotient (Q)
  • Number of electrons transferred (n)

4. Equilibrium Solver

• Solves for equilibrium concentrations in simple HA ⇌ H⁺ + A⁻ systems
• Requires initial concentration and K value

Key Features

✅ Four essential AP Chemistry calculators in one
✅ Clean, responsive design works on all devices
✅ Step-by-step calculations shown
✅ Error handling for invalid inputs
✅ Real-world applicable formulas

Pro Tips for Use

• For quadratic equilibrium problems, use the quadratic formula:
  x = [-b ± √(b² - 4ac)] / 2a
• Remember significant figures in your final answers
• For polyprotic acids, solve equilibria sequentially