Chemistry Boyle’s Law (Find P2)

Isothermal Boyle’s law for fixed n. Distinct from ideal-gas moles (PV=nRT).

Final pressure = (initial pressure × initial volume) ÷ final volume.

Tip: Keep “Initial Pressure (P1)” and “Initial Volume (V1)” on the same basis (period, units, and population) before calculating Chemistry Boyle’s Law (Find P2).

Cluster: Chemistry hub · Molarity · pH from [H+] · Physics hub · Percentage guide

At constant temperature and amount, P1V1 = P2V2. This page solves for P2.

Enter P1, V1, and V2 in matching units.

Initial pressure
Initial volume
Final volume

P2

Understanding Chemistry Boyle’s Law (Find P2)

How we calculate. Final pressure = (initial pressure × initial volume) ÷ final volume. The form uses the same arithmetic as the worked examples on this page. See our methodology and accuracy policy.

Real-world scenario: A typical Chemistry Boyle’s Law (Find P2) case uses initial pressure (p1) 1.20 and initial volume (v1) 3.0. Enter the same figures below to reproduce the worked path.

What is Chemistry Boyle’s Law (Find P2)?

Isothermal Boyle’s law for fixed n. Distinct from ideal-gas moles (PV=nRT).

  • Constant T and n
  • Same P units
  • Same V units

The Formula

Boyle’s Law (P2)
P2 = (P1 × V1) ÷ V2

Worked Example

Scenario: P1 = 1.20 atm; V1 = 3.0 L; V2 = 2.0 L.
Step 1: (1.20 × 3.0) ÷ 2.0 = 1.80
Answer: P2 is 1.80 atm.

Common Use Cases

  • Homework: gas compression
  • Study: inverse P–V
  • Lab: syringe demos

Pro Tips

  • Keep T constant
  • Don’t mix torr and atm without converting
  • Pair with ideal-gas moles

Limitations: Chemistry Boyle’s Law (Find P2) results are educational chemistry study aids—not lab safety certification, clinical advice, or industrial process control. Use consistent units and confirm formulas with your textbook or instructor.

FAQ

Same as ideal gas law?

Boyle’s law is the constant-T, constant-n special case. Ideal-gas moles uses full PV=nRT.

What if V2 is 0?

P2 is undefined—enter positive final volume.

Authoritative References

For chemistry study concepts, consult: