Arrhenius Equation Calculator implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-with-binding-errata

Evidence ID

t4-298

Effect

Computation or source lookup only

Input and validation requirements

The specification permits arbitrary combinations without stating validation behavior. Equal temperatures with unequal rate constants produce an undefined activation energy, and an unspecified temperature unit produces materially different results. The calculator should reject singular inputs and require absolute temperature in kelvin.

Required corrections

[
  {
    "vector": 4,
    "field": "k2, k2_over_k1",
    "wrong": "k2 200 (ratio 2) with Ea 1728.9439",
    "correct": "with given Ea: k2 = 141.42 (ratio √2); or Ea must be 3457.888 for ratio 2",
    "cause": "vector designed with T=300 in Ea instead of harmonic 600; her own working NOTICED the inconsistency and shipped anyway"
  }
]

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "A_s^-1": 250000000000,
    "Ea_J_per_mol": 0,
    "T_K": 298.15
  },
  "expected_outputs": {
    "k_s^-1": 250000000000
  },
  "working": "k = A·e^(-Ea/(RT))\n= 250000000000·e^(-0/(8.314462618·298.15))\n= 250000000000·e^0\n= 250000000000·1\n= 250000000000 s^-1"
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche4/tranche4-results.json
• tranche errata record