Molality Calculator - IOTools.cloud

curl --request POST \
  --url https://api.iotools.cloud/v1/tool/molality-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "soluteInputMode": "moles",
  "moles": "1",
  "solventMass": "2",
  "solventMassUnit": "kg",
  "includeColligative": "true",
  "solventPreset": "water",
  "kf": "1.86",
  "kb": "0.512",
  "vantHoff": "2"
}
'

{
  "tool": "molality-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "molality": "0.5 mol/kg",
    "result": [
      {
        "metric": "Moles of Solute",
        "value": "1 mol"
      },
      {
        "metric": "Solvent Mass",
        "value": "2 kg"
      },
      {
        "metric": "Molality",
        "value": "0.5 mol/kg"
      },
      {
        "metric": "Van't Hoff Factor (i)",
        "value": "2"
      },
      {
        "metric": "Kf (Freezing Point Depression Constant)",
        "value": "1.86 °C·kg/mol"
      },
      {
        "metric": "Freezing Point Depression (ΔTf)",
        "value": "1.86 °C"
      },
      {
        "metric": "Kb (Boiling Point Elevation Constant)",
        "value": "0.512 °C·kg/mol"
      },
      {
        "metric": "Boiling Point Elevation (ΔTb)",
        "value": "0.512 °C"
      },
      {
        "metric": "New Freezing Point",
        "value": "-1.86 °C"
      },
      {
        "metric": "New Boiling Point",
        "value": "100.512 °C"
      }
    ],
    "steps": "Formula: Molality (m) = moles of solute ÷ mass of solvent (kg)\nm = 1 mol ÷ 2 kg = 0.5 mol/kg\nΔTf = i × Kf × m = 2 × 1.86 × 0.5 = 1.86 °C\nΔTb = i × Kb × m = 2 × 0.512 × 0.5 = 0.512 °C"
  },
  "credits_used": 5,
  "credits_remaining": null
}

POST

/

v1

/

tool

/

molality-calculator

curl --request POST \
  --url https://api.iotools.cloud/v1/tool/molality-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "soluteInputMode": "moles",
  "moles": "1",
  "solventMass": "2",
  "solventMassUnit": "kg",
  "includeColligative": "true",
  "solventPreset": "water",
  "kf": "1.86",
  "kb": "0.512",
  "vantHoff": "2"
}
'

{
  "tool": "molality-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "molality": "0.5 mol/kg",
    "result": [
      {
        "metric": "Moles of Solute",
        "value": "1 mol"
      },
      {
        "metric": "Solvent Mass",
        "value": "2 kg"
      },
      {
        "metric": "Molality",
        "value": "0.5 mol/kg"
      },
      {
        "metric": "Van't Hoff Factor (i)",
        "value": "2"
      },
      {
        "metric": "Kf (Freezing Point Depression Constant)",
        "value": "1.86 °C·kg/mol"
      },
      {
        "metric": "Freezing Point Depression (ΔTf)",
        "value": "1.86 °C"
      },
      {
        "metric": "Kb (Boiling Point Elevation Constant)",
        "value": "0.512 °C·kg/mol"
      },
      {
        "metric": "Boiling Point Elevation (ΔTb)",
        "value": "0.512 °C"
      },
      {
        "metric": "New Freezing Point",
        "value": "-1.86 °C"
      },
      {
        "metric": "New Boiling Point",
        "value": "100.512 °C"
      }
    ],
    "steps": "Formula: Molality (m) = moles of solute ÷ mass of solvent (kg)\nm = 1 mol ÷ 2 kg = 0.5 mol/kg\nΔTf = i × Kf × m = 2 × 1.86 × 0.5 = 1.86 °C\nΔTb = i × Kb × m = 2 × 0.512 × 0.5 = 0.512 °C"
  },
  "credits_used": 5,
  "credits_remaining": null
}

Authorizations

Authorization

string

header

required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json

soluteInputMode

enum<string>

Solute Amount

Available options:

moles,

mass

moles

number

Moles of Solute (mol)

Required range: x >= 0

soluteMass

number

Solute Mass (g)

Required range: x >= 0

molarMass

number

Molar Mass (g/mol)

Required range: x >= 0

solventMass

number

Solvent Mass

Required range: x >= 0

solventMassUnit

enum<string>

Solvent Mass Unit

Available options:

kg,

g

includeColligative

boolean

Also calculate freezing & boiling point shifts

solventPreset

enum<string>

Solvent

Available options:

water,

custom

kf

number

Freezing Point Depression Constant Kf (°C·kg/mol)

Required range: x >= 0

kb

number

Boiling Point Elevation Constant Kb (°C·kg/mol)

Required range: x >= 0

vantHoff

number

Van't Hoff Factor (i)

Required range: x >= 0

Response

Tool output

outputs

object

required

Show child attributes

tool

string

required

The tool's slug, echoing the {slug} in the request path.

tool_version

string

required

Output-contract version for this tool.

credits_used

integer

required

Credits this call consumed, after any settlement refund. 0 when metering is disabled.

credits_remaining

integer | null

required

Credits left in the current monthly allowance, or null when metering is disabled.

request_id

string

Correlation id, also sent as x-request-id.