What is a molar concentration?

In chemistry, the concentration of the substance is in a mixture of substances, such as the amount of sodium chloride found in the sea. Concentration can be expressed as different units, often administered in terms of weight and volume. Molarity is a form of weight per unit of volume. A molar concentration of a particular substance is the number of moths of this substance dissolved in one liter of solution, no matter how many other substances can be dissolved in the same solution. The sodium atomic weight is 22.99. Atomic weight of chlorine is 35.45. This means that sodium chloride - one atom of both of these elements together - has a molecular weight of 58.44. Because one mole of the substance is defined as its molecular weight in grams, one MOL NaCl is 58.44 grams (g).

through illustration, if 537 milliliters (ml) of the solution contains 15.69 g sodium chloride, but no other substance, the molar concentration of this solution is (15.69 g / 58.44 g) ÷ (537 ml / 1000 ml) = 0.50. The solution is 0.50 m for sodium chloride. If the solution containsAnother component, such as magnesium bromide, this solution remains in sodium chloride 0.50 m . I also has a molar concentration in magnesium bromide.

magnesium atomic weight is 24.31. Bromine atomic weight is 79.90. The molecular weight of magnesium bromide is not 24,31 + 79,90 = 104,21. This is because magnesium bromide has a chemical formula, MgBr _{2 , because magnesium valence is +2, while Valence Brom is only -1. Right, molecular weight of magnesium bromide is 24.31 + (2 × 79.90) = 184.11.}

If 24.72 g is present at magnesium bromide, the moral concentration of magnesium bromide is (24.72 g / 184.11 g) ÷ (537 ml / 1000 ml) = 0.25 m. It is interesting to realize that despite the decrease in water molecules in this second solution compared to the first - concentrations are in terms of "per liter of solution", not "per liter of voDY " - Molar sodium chloride concentration is the same for both. It is theoretically possible for an extremely large number of substances to be present in a single liter of solution, resulting in collecting molar concentrations that are relatively low, with almost no water present.