Answer
Verified
396.6k+ views
Hint: We must know about the word normality. Generally, normality is a quantitative measurement for chemical solutions. We can use the below formula to determine the normality of the solution.
\[Normality{\text{ }}of{\text{ }}solution{\text{ }}N = \dfrac{{Weight}}{{equivalent{\text{ }}wt.}} \times \dfrac{{1000}}{{volume(ml)}}\]
Complete step by step answer:
The concentration of any solution that is acknowledged in terms of gram equivalents is the normality of the solution.
We can use normality as the number of mole equivalents per liter of solution. Usually, the normality of the solution is represented by N or equivalent per liter (\[eq/L\])units.
We know that the chemical formula of oxalic acid is \[{C_2}{H_2}{O_4}.2{H_2}O\]
Ans also the molecular mass of\[{C_2}{H_2}{O_4}.2{H_2}O\] =\[126g\]
Now, to calculate normality, we will use below formula
\[Normality{\text{ }}of{\text{ }}oxalic{\text{ }}acid,N = \dfrac{{Wt.{\text{ }}of{\text{ }}oxalic{\text{ }}acid}}{{equivalent{\text{ }}wt.}} \times \dfrac{{1000}}{{volume(ml)}}\]
To solve this, we must have a value of the equivalent weight of oxalic acid.
So, equivalent weight of Oxalic acid = \[\dfrac{{molecular{\text{ }}mass}}{{Basicity}}\]
∴ equivalent weight of Oxalic acid = \[\dfrac{{126}}{2}\] =\[63{\text{ }}gm/eq\].
Now, substituting the values, in the formula of normality equation, we get
Normality= \[\dfrac{{6.3}}{{63}} \times \dfrac{{1000}}{{500}} = 0.1 \times 2{\text{ }} = 0.2{\text{ }}gm.mole{\text{ }}per{\text{ }}liter\]
Hence, the Normality of oxalic acid is\[0.2{\text{ }}gram{\text{ }}moles{\text{ }}per{\text{ }}litre\].
Additional information:
We can use normality instead of molarity because often \[1{\text{ }}mole\]of acid does not neutralize \[1{\text{ }}mole\]of base.
Below given are different formulas that are used to calculate Normality of a solution depending upon given data.
i.\[Normality{\text{ }} = {\text{ }}Number{\text{ }}of{\text{ }}gram{\text{ }}equivalents{\text{ }} \times {\text{ }}{\left[ {volume{\text{ }}of{\text{ }}solution{\text{ }}in{\text{ }}litres} \right]^{ - 1}}\]
ii.\[Number{\text{ }}of{\text{ }}gram{\text{ }}equivalents{\text{ }} = {\text{ }}weight{\text{ }}of{\text{ }}solute\; \times {\text{ }}{\left[ {Equivalent{\text{ }}weight{\text{ }}of{\text{ }}solute} \right]^{ - 1}}\]
iii.\[N{\text{ }} = {\text{ }}Weight{\text{ }}of{\text{ }}Solute{\text{ }}\left( {gram} \right){\text{ }} \times {\text{ }}\left[ {Equivalent{\text{ }}weight{\text{ }} \times {\text{ }}Volume{\text{ }}\left( L \right)} \right]\]
iv.\[N{\text{ }} = {\text{ }}Molarity{\text{ }} \times {\text{ }}Molar{\text{ }}mass{\text{ }} \times {\text{ }}{\left[ {Equivalent{\text{ }}mass} \right]^{ - 1}}\]
v.\[N{\text{ }} = {\text{ }}Molarity\; \times {\text{ }}Basicity\; = {\text{ }}Molarity{\text{ }} \times {\text{ }}Acidity\]
Note:
We can use normality to determine the concentrations of the solution in acid-base titration chemistry. For example, we can use normality to determine the number of ions that will get precipitated in precipitation reactions. Also in redox reactions to determine the number of electrons that a reducing or an oxidizing agent can donate or accept.
\[Normality{\text{ }}of{\text{ }}solution{\text{ }}N = \dfrac{{Weight}}{{equivalent{\text{ }}wt.}} \times \dfrac{{1000}}{{volume(ml)}}\]
Complete step by step answer:
The concentration of any solution that is acknowledged in terms of gram equivalents is the normality of the solution.
We can use normality as the number of mole equivalents per liter of solution. Usually, the normality of the solution is represented by N or equivalent per liter (\[eq/L\])units.
We know that the chemical formula of oxalic acid is \[{C_2}{H_2}{O_4}.2{H_2}O\]
Ans also the molecular mass of\[{C_2}{H_2}{O_4}.2{H_2}O\] =\[126g\]
Now, to calculate normality, we will use below formula
\[Normality{\text{ }}of{\text{ }}oxalic{\text{ }}acid,N = \dfrac{{Wt.{\text{ }}of{\text{ }}oxalic{\text{ }}acid}}{{equivalent{\text{ }}wt.}} \times \dfrac{{1000}}{{volume(ml)}}\]
To solve this, we must have a value of the equivalent weight of oxalic acid.
So, equivalent weight of Oxalic acid = \[\dfrac{{molecular{\text{ }}mass}}{{Basicity}}\]
∴ equivalent weight of Oxalic acid = \[\dfrac{{126}}{2}\] =\[63{\text{ }}gm/eq\].
Now, substituting the values, in the formula of normality equation, we get
Normality= \[\dfrac{{6.3}}{{63}} \times \dfrac{{1000}}{{500}} = 0.1 \times 2{\text{ }} = 0.2{\text{ }}gm.mole{\text{ }}per{\text{ }}liter\]
Hence, the Normality of oxalic acid is\[0.2{\text{ }}gram{\text{ }}moles{\text{ }}per{\text{ }}litre\].
Additional information:
We can use normality instead of molarity because often \[1{\text{ }}mole\]of acid does not neutralize \[1{\text{ }}mole\]of base.
Below given are different formulas that are used to calculate Normality of a solution depending upon given data.
i.\[Normality{\text{ }} = {\text{ }}Number{\text{ }}of{\text{ }}gram{\text{ }}equivalents{\text{ }} \times {\text{ }}{\left[ {volume{\text{ }}of{\text{ }}solution{\text{ }}in{\text{ }}litres} \right]^{ - 1}}\]
ii.\[Number{\text{ }}of{\text{ }}gram{\text{ }}equivalents{\text{ }} = {\text{ }}weight{\text{ }}of{\text{ }}solute\; \times {\text{ }}{\left[ {Equivalent{\text{ }}weight{\text{ }}of{\text{ }}solute} \right]^{ - 1}}\]
iii.\[N{\text{ }} = {\text{ }}Weight{\text{ }}of{\text{ }}Solute{\text{ }}\left( {gram} \right){\text{ }} \times {\text{ }}\left[ {Equivalent{\text{ }}weight{\text{ }} \times {\text{ }}Volume{\text{ }}\left( L \right)} \right]\]
iv.\[N{\text{ }} = {\text{ }}Molarity{\text{ }} \times {\text{ }}Molar{\text{ }}mass{\text{ }} \times {\text{ }}{\left[ {Equivalent{\text{ }}mass} \right]^{ - 1}}\]
v.\[N{\text{ }} = {\text{ }}Molarity\; \times {\text{ }}Basicity\; = {\text{ }}Molarity{\text{ }} \times {\text{ }}Acidity\]
Note:
We can use normality to determine the concentrations of the solution in acid-base titration chemistry. For example, we can use normality to determine the number of ions that will get precipitated in precipitation reactions. Also in redox reactions to determine the number of electrons that a reducing or an oxidizing agent can donate or accept.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Write an application to the principal requesting five class 10 english CBSE
Difference Between Plant Cell and Animal Cell
a Tabulate the differences in the characteristics of class 12 chemistry CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
Discuss what these phrases mean to you A a yellow wood class 9 english CBSE
List some examples of Rabi and Kharif crops class 8 biology CBSE