Percent Yield Calculator

Inspectable records

Ledger state

The current ledger marks this instrument verified clean within the source-bound verification corpus.

Area

Chemistry & Materials

Tranche

tranche-2

Evidence ID

t2-015

Ledger rows

1

No ledger note is attached.

Review findings

The arithmetic engine is appropriate, but the catalog specification needs explicit validation rules for a positive, nonzero theoretical yield, nonnegative actual yield, matching product and stoichiometric basis, and unit compatibility. Values above 100% should be displayed honestly rather than clipped.

Formula and scope findings

• The formula %yield=(actual/theoretical)×100 is the standard formula. The specification does not explicitly constrain actual and theoretical yields to represent the same substance on the same basis and in compatible units.
• The specification does not state that theoretical yield must be nonzero.

Unit assumptions

• Actual and theoretical yields must use the same unit before calculation, such as grams with grams or moles with moles.
• Actual and theoretical yields must refer to the same product and equivalent stoichiometric basis.
• The output is a dimensionless percentage.

Boundary hardening

BREAK_CLAIMED · SELF_FLAGGED

A theoretical yield of exactly zero causes division by zero and must be rejected. Negative yields also expose an unstated sign-validity convention.

Errata and corrections

No applied erratum is attached to this unique-name record.

Inspectable example

4 review vectors are recorded. One source-bound sample is shown below.

{
  "inputs": {
    "actual_yield": 8.5,
    "theoretical_yield": 10,
    "unit": "g"
  },
  "expected_outputs": {
    "percent_yield": 85
  },
  "working": "%yield=(actual/theoretical)×100=(8.5 g/10.0 g)×100=0.85×100=85.0%"
}

Related workflows

No source-defined multi-instrument workflow membership is recorded.

Sources and evidence

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

• VERIFIED_LEDGER.json · VERIFIED_CLEAN
• evidence-tranche2/tranche2-results.json
• BOUNDARY_HAZARD_CATALOG.json