Calculator Input
Formula Used
Mass solubility: S = solute mass ÷ solvent mass × 100
Grams per liter: g/L = solute mass ÷ solution volume in liters
Molarity: M = moles of solute ÷ liters of solution
Molality: m = moles of solute ÷ kilograms of solvent
Temperature adjustment: adjusted S = reference S × [1 + coefficient × temperature change]
Saturation: saturation % = actual solute ÷ maximum dissolved solute × 100
Ksp solubility: Ksp = (aS)a(bS)b, solved for S.
How to Use This Calculator
Enter the solute mass and solvent mass first. Add the total solution volume when concentration is needed. Enter molar mass for molarity, molality, and Ksp results. Use a reference solubility from a label, lab book, or solubility chart. Add the reference temperature and current sample temperature. Enter a temperature coefficient when the solubility changes with heat. Use a positive value when solubility rises with temperature. Use a negative value when solubility drops with temperature. Press calculate. The result appears above the form. Use CSV for spreadsheet records. Use PDF for reports.
Example Data Table
| Example | Solute mass | Solvent mass | Volume | Reference solubility | Result meaning |
|---|---|---|---|---|---|
| Sodium chloride sample | 25 g | 100 g | 250 mL | 35.9 g/100 g | Undersaturated solution |
| Concentrated sugar mix | 220 g | 100 g | 300 mL | 200 g/100 g | Near saturation |
| Low Ksp salt | 0.02 g | 100 g | 1000 mL | 0.01 g/100 g | May form precipitate |
Solubility Chemistry Guide
What Solubility Means
Solubility describes how much solute can dissolve in a solvent. It depends on substance identity, solvent type, pressure, and temperature. This calculator focuses on common liquid solution work. It compares actual solute mass with the amount that may dissolve. The result helps classify a mixture as undersaturated, near saturation, or supersaturated.
Why Units Matter
Chemistry uses several concentration units. A mass ratio is simple for preparation work. Grams per liter helps with stock solutions. Molarity is useful for reactions because it counts particles by moles. Molality is useful when temperature changes because it uses solvent mass instead of solution volume. The calculator gives all major values together, so you can compare them quickly.
Temperature Effect
Many solids dissolve better in warm water. Some gases and unusual salts behave differently. The temperature coefficient gives a practical estimate when full chart data is not available. A positive coefficient increases predicted solubility as temperature rises. A negative coefficient lowers it. This method is an estimate. Use verified charts for critical lab work.
Saturation and Crystals
A solution is undersaturated when more solute can dissolve. It is saturated when it holds about the maximum amount. It may be supersaturated when it contains more solute than normal equilibrium allows. Cooling can reduce solubility. When the colder solvent cannot hold the dissolved mass, crystals may form. The crystal yield estimate shows this possible recovered mass.
Ksp Mode
Low solubility ionic compounds are often described by Ksp. The calculator supports simple ionic formulas using cation and anion coefficients. For AB, both coefficients are one. For AB2, the anion coefficient is two. The tool solves molar solubility and converts it to grams per liter when molar mass is entered.
Practical Use
Use this page for class problems, preparation checks, precipitation estimates, and cooling crystallization planning. Always confirm hazardous mixtures with approved references. Wear proper protection in a real lab.
FAQs
1. What does this solubility calculator measure?
It estimates mass solubility, grams per liter, molarity, molality, saturation level, cooling crystal yield, and Ksp-based molar solubility from the values you enter.
2. What is g per 100 g solvent?
It means grams of solute dissolved in 100 grams of solvent. This unit is common in solubility tables and classroom chemistry problems.
3. What does undersaturated mean?
Undersaturated means the solvent can still dissolve more solute at the stated temperature, based on the reference solubility and adjustment values.
4. What does supersaturated mean?
Supersaturated means the entered solute amount is above the estimated normal solubility limit. Such solutions may crystallize if disturbed or cooled.
5. Can I use this for salts with Ksp?
Yes. Enter Ksp, molar mass, and ion coefficients. The calculator estimates molar solubility and converts it into grams per liter.
6. Is the temperature correction exact?
No. It is an estimate based on a coefficient. Use experimental solubility tables when precision, safety, or regulatory work matters.
7. Why do I need molar mass?
Molar mass converts grams into moles. It is required for molarity, molality, and the mass form of Ksp solubility.
8. What does crystal yield mean?
Crystal yield estimates how much dissolved solute may separate after cooling, if the colder solvent cannot hold the same dissolved amount.