pH and pOH for a strong or weak acid or base, a hydrogen-ion concentration, or a...
https://chemistry-calc.x402tookit.com/ph-calcOverview
pH and pOH for a strong or weak acid or base, a hydrogen-ion concentration, or a buffer (Henderson-Hasselbalch).
Protocol
x402
Price
$0.02
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Chemistry Calculators
Source
bazaar
Indexed
2026-10-20 21:22:34
Health
Status
healthy
Latency (p50)
671ms
Uptime (30d)
86.7%
Reliability Score
83.3/100
Last Checked
2026-10-28 06:45:32
Last Healthy
2026-10-28 06:45:32
Consecutive Failures
0
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Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"concentration": 0.1,
"ka": 0.000018,
"mode": "weak-acid"
},
"type": "http"
}
Output Schema
{
"example": {
"asOf": "2026-10-11T08:45:40.750Z",
"degraded": false,
"description": "strongly acidic",
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"hydrogenIonMolar": 0.001332671,
"hydroxideIonMolar": 7.5037276e-12,
"method": "exact quadratic x^2 / (c - x) = Ka (no small-x approximation)",
"mode": "weak-acid",
"notChecked": [
"activity coefficients (real solutions above about 0.1 M deviate from these ideal results)",
"temperature (Kw = 1e-14 at 25 C only)",
"…2 more"
],
"pH": 2.8752771,
"pOH": 11.124723,
"percentIonised": 1.3327,
"reasons": [
"exact quadratic x^2 / (c - x) = Ka (no small-x approximation).",
"Assumes 25 C (pH + pOH = 14) and ideal dilute solutions.",
"…1 more"
],
"source": "computed locally",
"summary": "pH 2.875 (pOH 11.12), strongly acidic; [H+] = 1.333e-3 M, [OH-] = 7.504e-12 M.",
"verdict": "ACIDIC"
},
"type": "json"
}