Math & Numbers

Reaction Stoichiometry Calculator

Determine the limiting reagent and compute theoretical yield, actual yield, and percent yield from a balanced reaction.

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/reaction-stoichiometry-calculator' \
  -H 'Content-Type: application/json' \
  -d '{"reactants":"2 H2, 1.0 g\n1 O2, 8.0 g","product":"2 H2O","actualYield":0,"decimalPlaces":4}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/reaction-stoichiometry-calculator

Parameters

Name	Type	Required	Description
reactants	textarea	Yes	Each line: optional label, stoichiometric coefficient + chemical formula, and the available mass (g/kg/mg).
product	text	Yes	Chemical formula of the product whose yield you want. Include its stoichiometric coefficient (e.g. 2 H2O).
actualYield	number	No	—
decimalPlaces	number	No	—

Response format

JSON result

JSON

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-reaction-stoichiometry-calculator": {
      "name": "reaction-stoichiometry-calculator",
      "description": "Determine the limiting reagent and compute theoretical yield, actual yield, and percent yield from a balanced reaction.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=reaction-stoichiometry-calculator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "reaction-stoichiometry-calculator",
    "arguments": {
  "reactants": "2 H2, 1.0 g\n1 O2, 8.0 g",
  "product": "2 H2O",
  "actualYield": 0,
  "decimalPlaces": 4
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

Browse tools Open tool

curl -X POST 'https://api.elysiatools.com/en/api/tools/reaction-stoichiometry-calculator' \ -H 'Content-Type: application/json' \ -d '{"reactants":"2 H2, 1.0 g\n1 O2, 8.0 g","product":"2 H2O","actualYield":0,"decimalPlaces":4}'

Name

Type

Required

Description

reactants

textarea

Yes

Each line: optional label, stoichiometric coefficient + chemical formula, and the available mass (g/kg/mg).

product

text

Yes

Chemical formula of the product whose yield you want. Include its stoichiometric coefficient (e.g. 2 H2O).

actualYield

number

—

decimalPlaces

number

—

{ "mcpServers": { "elysiatools-reaction-stoichiometry-calculator": { "name": "reaction-stoichiometry-calculator", "description": "Determine the limiting reagent and compute theoretical yield, actual yield, and percent yield from a balanced reaction.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=reaction-stoichiometry-calculator", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "reaction-stoichiometry-calculator", "arguments": { "reactants": "2 H2, 1.0 g\n1 O2, 8.0 g", "product": "2 H2O", "actualYield": 0, "decimalPlaces": 4 } } }