Stoichiometry Calculator

This Stoichiometry Calculator allows users to calculate the moles, mass, limiting reagent, and theoretical yield percentage of a second compound based on user-defined input of first compound moles and coefficients in a chemical reaction.

Use Our Stoichiometry Calculator

How to Use the Stoichiometry Calculator

Introduction

This guide will walk you through using the Stoichiometry Calculator to determine the balanced chemical reactions between two compounds. The calculator requires input about the compounds, their quantities, and their coefficients in the reaction. It will then provide useful stoichiometric calculations such as the amount of product formed and the theoretical yield.

Steps to Use the Calculator

Step 1: Select the First Compound

  1. Locate the “Select First Compound” dropdown menu.

    Select the desired compound from the following options:

    • H₂
    • O₂
    • H₂O
    • CO₂
    • CH₄
    • NH₃

Step 2: Enter the Number of Moles for the First Compound

  1. In the field labeled “Number of Moles (First Compound)”, input the quantity of moles.

    Ensure the value is greater than or equal to 0.000001 and make increments in steps of 0.000001 if needed.

Step 3: Select the Second Compound

  1. Find the “Select Second Compound” dropdown menu and choose from the same options available in Step 1.

Step 4: Enter the Coefficient for the First Compound

  1. Enter a value in the field “Coefficient of First Compound”.

    Ensure the coefficient is at least 1 and adjust in whole number increments.

Step 5: Enter the Coefficient for the Second Compound

  1. In the field labeled “Coefficient of Second Compound”, input the appropriate coefficient.

    As earlier, the coefficient must be at least 1 and adjusted in whole number steps.

Interpreting the Results

Once all input fields are completed, the calculator will provide the following results:

  • Moles of Second Compound: Calculated as (Moles of First Compound × Coefficient of Second Compound) / Coefficient of First Compound, displayed with 6 decimal places.
  • Mass of First Compound: Computed using the formula (Moles of First Compound × Molar Mass of First Compound), shown in grams with 4 decimal places.
  • Mass of Second Compound: Determined by (Moles of Second Compound × Molar Mass of Second Compound), presented in grams with precision to 4 decimal places.
  • Limiting Reagent: Identifies which compound is the limiting reagent in the reaction.
  • Theoretical Yield Percentage: Shows the theoretical yield of the reaction as a percentage, calculated to two decimal points.

Make sure to review and interpret each result carefully to understand the stoichiometric relationships in your chemical reaction.