How are molarity and concentration related?

Answer 1

"Normality" refers to the activity of a reagent: gram equivelant dissolve in a liter? "Molarity" refers the numbers of moles of the solute present per litre of the solution. "Molality" refers the numbers of moles of solute present in 1000 grams of the solvent. Thus, for hydrochloric acid (HCl) and sodium hydroxide (NaOH) the normality is equal to the molarity. But for dibasic substances like sulfuric acid (H2SO4) or barium hydroxide Ba(OH)2, the normality is twice the molarity. For a tribasic substance, normality would be three times the molarity and so forth.
Molarity measures the number of moles of a substance present in per liter of solution. Normality is basically a measure of concentration that is in the mixture of solution.

Answer 2

Molarity and concentration are related because molarity is a specific type of concentration measurement. Molarity measures the number of moles of solute per liter of solution, while concentration is a more general term that describes the amount of solute present in a given volume of solution. Therefore, molarity is a way to express concentration in a standardized unit.

Answer 3

Normality is another way to express the concentration of a solution. It is similar in many ways to molarity. The difference is that molarity is way to provide information about the number of molecules in a liter of solution and normality provides information about the number of reactive units in a liter of solution. Molarity is expressed in terms of moles of a compound per liter of solution. (Remember a mole is molecules) Normality is expressed in equivalents per liter. An equivalent can defined as the number of moles of "reactive units" in a compound. One equivalent can either react with or take the place of one mole of hydrogen ions.

Answer 4

pH has to do with the concentration of H+ ions in the aqueous solution of acid (also known as the hydronium ion H3O+) It is found by taking the negative ln of the concentration of the H+ ions of the solution per mililiter

Molarity is the amount of acid in the aqueous solution per liter. ie, if there is 12 molar HCl diluted with water in a 3:1 ratio, that solution will now be 3 molar, as it has been diluted to 25% 12 molar HCl and 75% H2O

Answer 5

in molarity we dissolved no of moles of solute in 1 dm3 volume of its solution but in molality we dissolved no of moles of solute in 1000 gram or 1 kg of solvent in molarity we don't know the exact amount of solvent quantity but in mplality we know the exact volume of solvent ( water)

Answer 6

For some solutions IE HCl they are the same because 1 mole H+ ions is formed by one mole of HCl, but some IE H2SO4 produces 2 moles of H+ ions for one mole of acid, so the normality is 2 times the molarity.

Answer 7

That's a darn good question. One is tempted to say "sheer perversity in increasing the number of things chemistry students have to learn," but actually, normality is occasionally useful. If you have a 1N solution of acid, all its acid protons will be removed by an equal amount of 1N solution of base (which will in turn have all its hydroxyl groups removed by the acid). Any acid, any base. The same is not necessarily true of molarity; 1M sulfuric acid will retain half its acid protons when reacted with an equal amount of 1M sodium hydroxide. Molality is another one that seems pointless at first, but it also has its uses (freezing point depression and boiling point elevation calculations use molality, not molarity).

Answer 8

Molarity is the concentration of a solution in moles per litre. Normality is the concentration of a solution in equivalent masses per litre.

Answer 9

if the drug is acidic which is more soluble in basic medium and if the drug is basic it is more soluble in acidic medium

Answer 10

Molarity is a measure of concentration. As an example, 1M NaOH solution contains 40g of NaOH in one litre of water (1000g) and thus the concentration would be 4% NaOH.