0
In chemistry, the normality of a solution is defined as the molar concentration ci divided by an equivalence factor feq:
normality = M / feq
The equivalence factor feq is the factor of how many moles of a reactant is needed to give 1 mole of reactive entities, like:
- protons (H+ or OH-) in acid/base reactions,
- electrons (e-) in redox reactions and
- ion charges in ionic salt precipitation reactions
Examples:
Ca(OH)2 feq = 1/2 = 0.5
NH3 feq = 1 (accepting 1 proton as base, not 3!)
H3PO4 feq = 1/3 = 0.333..3 (donating 3 protons with strong acid)
H2C2O4.2H2O (oxalic acid, standard) feq = 0.5 (both as bacid and as reductant)
Na2S2O3 (thio) feq = 1 (donating 1 electron)
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoIt gives you 'how many' moles of unified/equivalent reacting particles (mostly protons for acid/base reactions or electrons for redox reactions) there are within one mole of compound considered.
Examples:
In acidimetry
oxalic acid (COOH)2 is diprotic (2H+), so two equivalents per mole: 1.0 M = 2.0 N
HPO42- + 2H+ --> H3PO4 is 2 equiv. per mol with strong acid
HPO42- + OH- --> PO43- + H2O is 1 equiv. per mol with strong base
In oxidimetry
oxalic acid (COOH)2 is di-electrovalent (2e-), so also two equivalents per mole: 1.0 M = 2.0 N
MnO4- + 8H+ + 5e- --> Mn2+ + 4H2O is 5 equiv. per mol (in strong acid solution)
MnO4- + 2H2O + 3e- --> MnO2 + 4OH- is 3 equiv. per mol (in neutral solution)
Wiki User
∙ 11y agonumber of moles divided on volume in liter
Add your answer:
Earn +20 pts
What is the normality of a 6.35 M H2SO4 is?
0.08 n
Will the normality of an NaOH solution increase or decrease if the solution is exposed to air for prolonged periods?
If the solution volume remains unchanged, the normality will decrease as the NaOH will react with CO2 present in the air. Of course, if the solution volume is not held constant and if the evaporation rate is sufficient to concentrate the solution - it could also increase (effectively raising the normality of the remaining solution).
What is the molarity of a 0.050 N H2SO4 solution?
H2SO4 releases two hydrogen ions into solution. Therefore its Normality is twice its Molarity. Or to answer the question, the molarity is half the normality.
What is the normality of 98 g of sulfuric acid in 500 mL of solution?
The normality of 98 g of sulfuric acid in 500 mL of solution is 4 N
How do you prepare 200ml of ethyl acetate of 0.1 Normality solution?
Density of etyl acetate
What is the normality of a 0.10 M solution of phosphoric acid?
The normality is o,3.
Why you use normality?
for calculating the concentration of solution.
What is the normality of a 6.35 M H2SO4 is?
0.08 n
Definition of normality as concerned to chemistry?
Normality of a solution is defined as the molar concentration divided by an equivalent factor
Will the normality of an NaOH solution increase or decrease if the solution is exposed to air for prolonged periods?
If the solution volume remains unchanged, the normality will decrease as the NaOH will react with CO2 present in the air. Of course, if the solution volume is not held constant and if the evaporation rate is sufficient to concentrate the solution - it could also increase (effectively raising the normality of the remaining solution).
What is the molarity of a 0.050 N H2SO4 solution?
H2SO4 releases two hydrogen ions into solution. Therefore its Normality is twice its Molarity. Or to answer the question, the molarity is half the normality.
What is the normality of 98 g of sulfuric acid in 500 mL of solution?
The normality of 98 g of sulfuric acid in 500 mL of solution is 4 N
Derivation of normality?
The normality of a solution is the gram equivalent weight of a solute per liter of solution. For example, 1 M sulfuric acid (H2SO4) is 2 N for acid-base reactions because each mole of sulfuric acid provides 2 moles H+ ions.
What is the primary standard solution for checking normality of Hcl?
NaOH
How do you calculate normality of a solution?
Specific amount of such solution is allow to react with another standard solution as in case of titration process then with the help of formulae normality may be calculated.
How do you prepare 200ml of ethyl acetate of 0.1 Normality solution?
Density of etyl acetate
What is the normality of 2 lit solution contaning 40 gm of NaOH?
0.5 N
