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Total Hardness Formula

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The Total Hardness of Water formula is defined as the sum of the calcium and magnesium concentrations, both expressed as calcium carbonate. Check FAQs

T H = (2.497 \cdot Ca) + (4.118 \cdot Mg)

T_H - Total Hardness of Water?Ca - Calcium Concentration?Mg - Magnesium Concentration?

Total Hardness Example

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With units

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Here is how the Total Hardness equation looks like with Values.

Here is how the Total Hardness equation looks like with Units.

Here is how the Total Hardness equation looks like.

3.0578 = (2.497 \cdot 0.4) + (4.118 \cdot 0.5)

3.0578mEq/L = (2.497 \cdot 0.4mEq/L) + (4.118 \cdot 0.5mEq/L)

3.0578 = (2.497 \cdot 0.4) + (4.118 \cdot 0.5)

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Total Hardness Solution

Follow our step by step solution on how to calculate Total Hardness?

FIRST Step Consider the formula

T H = (2.497 \cdot Ca) + (4.118 \cdot Mg)

Next Step Substitute values of Variables

∴

T H = (2.497 \cdot 0.4mEq/L) + (4.118 \cdot 0.5mEq/L)

Next Step Convert Units

∴

T H = (2.497 \cdot 0.4mol/m³) + (4.118 \cdot 0.5mol/m³)

Next Step Prepare to Evaluate

∴

T H = (2.497 \cdot 0.4) + (4.118 \cdot 0.5)

Next Step Evaluate

∴

T H = 3.0578mol/m³

LAST Step Convert to Output's Unit

∴

T H = 3.0578mEq/L

Total Hardness Formula Elements

Variables

Total Hardness of Water

The Total Hardness of Water formula is defined as the sum of the calcium and magnesium concentrations, both expressed as calcium carbonate.

Symbol: T_H

Measurement: Molar ConcentrationUnit: mEq/L

Note: Value can be positive or negative.

Formulas to find Total Hardness of Water

Calcium Concentration

Calcium Concentration is the ratio of solute in a solution to either solvent or total solution. Concentration is usually expressed in terms of mass per unit volume.

Symbol: Ca

Measurement: Molar ConcentrationUnit: mEq/L

Note: Value can be positive or negative.

Formulas to find Calcium Concentration

Magnesium Concentration

Magnesium Concentration is the ratio of solute in a solution to either solvent or total solution. Concentration is usually expressed in terms of mass per unit volume.

Symbol: Mg

Measurement: Molar ConcentrationUnit: mEq/L

Note: Value can be positive or negative.

Formulas to find Magnesium Concentration

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Go Strength of Unknown Metal ion given Absorbance

S uk = (\frac{A unk}{A k}) \cdot S K

Go Strength of Unknown Metal ion given Known Strength

S uk = \frac{S K \cdot v′}{25}

Go Strength of known Metal ion given Unknown Strength

S K = \frac{S uk \cdot 25}{v′}

How to Evaluate Total Hardness?

Total Hardness evaluator uses Total Hardness of Water = (2.497*Calcium Concentration)+(4.118*Magnesium Concentration) to evaluate the Total Hardness of Water, The Total Hardness formula is defined as the sum of the calcium and magnesium concentrations, both expressed as calcium carbonate. Total Hardness of Water is denoted by T_H symbol.

How to evaluate Total Hardness using this online evaluator? To use this online evaluator for Total Hardness, enter Calcium Concentration (Ca) & Magnesium Concentration (Mg) and hit the calculate button.

FAQs on Total Hardness

What is the formula to find Total Hardness?

The formula of Total Hardness is expressed as Total Hardness of Water = (2.497*Calcium Concentration)+(4.118*Magnesium Concentration). Here is an example- 3.0578 = (2.497*0.4)+(4.118*0.5).

How to calculate Total Hardness?

With Calcium Concentration (Ca) & Magnesium Concentration (Mg) we can find Total Hardness using the formula - Total Hardness of Water = (2.497*Calcium Concentration)+(4.118*Magnesium Concentration).

Can the Total Hardness be negative?

Yes, the Total Hardness, measured in Molar Concentration can be negative.

Which unit is used to measure Total Hardness?

Total Hardness is usually measured using the Milliequivalents per Liter[mEq/L] for Molar Concentration. Mole per Cubic Meter[mEq/L], Mole per Liter[mEq/L], Mole per Cubic Millimeter[mEq/L] are the few other units in which Total Hardness can be measured.

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Total Hardness Formula

Total Hardness Example

Total Hardness Solution

Total Hardness Formula Elements

Other formulas in Analytical Methods category

How to Evaluate Total Hardness?

FAQs on Total Hardness

Variable Name