 ### Calculate the equivalent mass of H3PO4 ?

12 09 2011Definition of equivalent mass : Equivalent mass is a term which has been used in several contexts in chemistry In its most general usage it is the mass of one equivalent that is the mass of a given substance which will supply or react with one mole of hydrogen cations H+ in an acid–base reaction ### What is the equivalent weight of: (a) Potassium

What is the equivalent weight of: (a) Potassium tetraoxalate KHC2O4•H2C2O4•2H2O if the complete neutralization is assumed (b) Sodium carbonate if it is titrated to the phenolphthalein end point with HCl The reaction is Na2CO3 + HCl = NaCl + NaHCO3 (c) Sodium tetraborate decahydrate if the titration reaction is Na2 B4O7•10H2O + 2H+ + H2O = 4HBO2 + 2Na+? (d) ### Experiment Number:

The number of gram equivalent weight of a solute per litre of solution is called normality Normality (N) = gm equivalent of solute /litres per solution It is known to us that both alkalimetry and acidimetry are based on neutralization reaction If an acid-base reaction is such like that a ACID + b BASE = PRODUCT then we know that V base X S base = V acid X S acid so S acid ### How to Calculate Equivalent Units

Chemists use equivalent units or equivalents to express the reactive capacity of a chemical species such as electrons or ions like H+ The equivalent defines how many electrons or ions may be transferred in a chemical reaction For example in the acid HCl with 1 H+ the no of equivalents is 1 ### 9 E: Titrimetric Methods (Exercises)

Determine the compound's equivalent weight 24 Figure 9 47 shows a potentiometric titration curve for a 0 4300-g sample of a purified amino acid that was dissolved in 50 00 mL of water and titrated with 0 1036 M NaOH Identify the amino acid from the possibilities listed in ### How to Calculate Normality of a Solution

For example the concentration of a hydrochloric acid solution might be expressed as 0 1 N HCl A gram equivalent weight or equivalent is a measure of the reactive capacity of a given chemical species (ion molecule etc ) The equivalent value is determined using the molecular weight and valence of the chemical species ### How to Calculate Equivalent Units

Chemists use equivalent units or equivalents to express the reactive capacity of a chemical species such as electrons or ions like H+ The equivalent defines how many electrons or ions may be transferred in a chemical reaction For example in the acid HCl with 1 H+ the no of equivalents is 1 ### How to Calculate Equivalent Units

Chemists use equivalent units or equivalents to express the reactive capacity of a chemical species such as electrons or ions like H+ The equivalent defines how many electrons or ions may be transferred in a chemical reaction For example in the acid HCl with 1 H+ the no of equivalents is 1 ### What Is a Primary Standard in Chemistry?

In chemistry a primary standard is a reagent that is very pure representative of the number of moles the substance contains and easily weighed A reagent is a chemical used to cause a chemical reaction with another substance Often reagents are used to test for the presence or quantity of specific chemicals in a solution ### كيفية حساب الوزن المكافئ

كيفية حساب الوزن المكافي | Calculate the Equivalent Weight ما هو الوزن المكافئ ل الفضة Ag ما هو الوزن المكافئ ل نترات الفضة AgNO3 ما هو الوزن المكافؤ لمركب البوتاسيوم سيو سيانيد KSCN ما هو الوزن المكافي لمركب الصوديوم هيدروكسيد NaOH وتسمي ### Hydrochloric Acid Solution Strength Determination

Apparatus and Reagents —The usual volumetric and gravimetric apparatus The student may take for analysis a sample of the ordinary bench reagent 5E HCl He will also require about 10 gms pure NaHCO3 and should test this substance for Cl and SO3 If these are found place a small plug of cotton-wool in the neck of a funnel and on it pack about 100 gms of the ### Barium carbonate

0 06 mg barium/animal (as barium carbonate) was given im to rats (strain not given) Most of the dose was resorbed from the injection site within 3 days 20% of the initial dose remained in the body (mostly in the skeleton) after 280 days Average barium carbonate concentration at 1 hr was 50% that of barium chloride ### How Do I Calculate Equivalent Weight?

Calculate equivalent weight Divide the molecular weight by the number of hydrogen protons it donates as acid or the number of hydroxide (OH)- anions it produces as a base Use the units of grams per equivalent of H+ or grams per equivalent of (OH)- depending on the ion species the molecule donates to the reaction ### Calculating equivalent mass

To start let's talk about what an equivalent of a substance is According to the classical definition an equivalent of a substance is a conditional or real particle that can be equivalent in any way to a cation of hydrogen in ion exchange and acid-base reactions or to an electron in redox reactions ### Calculate the equivalent mass of H3PO4 ?

12 09 2011Definition of equivalent mass : Equivalent mass is a term which has been used in several contexts in chemistry In its most general usage it is the mass of one equivalent that is the mass of a given substance which will supply or react with one mole of hydrogen cations H+ in an acid–base reaction ### TITRIMETRIC ANALYSIS

Before starting titrimetric analysis you should be familiar with some techniques such as weighing by using chemical balance preparing standard solution measuring volume by using burette and pipette 6 4 INDICATORS IN ACID BASE TITRATION Acid base indicators are sensitive to pH change For most acid base ### Analytical Chemistry

calculation of equivalent weight But depending upon the reaction involved equivalent weight can be simplified as below Equivalent weight in Neutralization Reactions: Equivalent weight of an acid is that weight of it which contains one g atom of replaceable hydrogen e g 1 0078 g of hydrogen Equivalent weight of monobasic acids is equal to its ### An analysis of a mixture of Na2CO3

In this case 1 mole of H3PO4 reacts with 1 mole of NaOH Accordingly the equivalent weight of H3PO4 equals the molecular weight 5 ln another experiment titrate 10 ml of phosphoric acid solution using ph ph In this case 1 mole of H3PO4 reacts with 2 moles of NaOH and the equivalent weight of the acid equals M wt /2 Calculations: ### acid base

I think the main confusion you're having here is that you misinterpretted the composition of the system at the first end point While you are correct that an equivalent non-equilibrium system is just all \$ce{HCO3-}\$ it is not correct to think of this as an acid This is bicarbonate ### how to calculate equivalent wt of Na2CO3 and NaHCO3

31 03 2008For Na2CO3 there are two Na+ atoms to react with acids Therefore in case of Na2CO3 equivalent weight is Molecular weight / 2 In the case of NaHCO3 there is only one Na+ to react with acids (You can imagine that one Na of Na2CO3 has been used by an acid) Therefore equivalent weight is Molecular weight / 1 or molecular weight itself In case ### how to calculate equivalent wt of Na2CO3 and NaHCO3

31 03 2008For Na2CO3 there are two Na+ atoms to react with acids Therefore in case of Na2CO3 equivalent weight is Molecular weight / 2 In the case of NaHCO3 there is only one Na+ to react with acids (You can imagine that one Na of Na2CO3 has been used by an acid) Therefore equivalent weight is Molecular weight / 1 or molecular weight itself In case ### equivalent weight of bacl2

By definition equivalent weight is the mass of the substance that would react with 1g of hydrogen Therefore you must divide the mass by 2 to get equivalent weight In fact this formula based definition of equivalent weight of an element is identical with the definition mentioned earlier in this answer ### How To Calculate Equivalent Weight Of Na2co3 And Khp

How To Calculate Equivalent Weight Of Na2co3 And Khp How I should calculate the equivalent weight of oxalic acid? Oxalic acid is dicarboxylic acid with basicity 2 So it would beequivalent weight = 90 03/2 = 45 015 g/molBut in case you're dealing with oxalic acid dihydrate HOOC-COOH 2 H2O then it be same as it's Molecular Mass ie 126 g/molExplanation:In general the equivalent weight ### how to calculate equivalent wt of Na2CO3 and NaHCO3

31 03 2008For Na2CO3 there are two Na+ atoms to react with acids Therefore in case of Na2CO3 equivalent weight is Molecular weight / 2 In the case of NaHCO3 there is only one Na+ to react with acids (You can imagine that one Na of Na2CO3 has been used by an acid) Therefore equivalent weight is Molecular weight / 1 or molecular weight itself In case ### How To Calculate Equivalent Weight Of Na2co3 And Khp

How To Calculate Equivalent Weight Of Na2co3 And Khp How I should calculate the equivalent weight of oxalic acid? Oxalic acid is dicarboxylic acid with basicity 2 So it would beequivalent weight = 90 03/2 = 45 015 g/molBut in case you're dealing with oxalic acid dihydrate HOOC-COOH 2 H2O then it be same as it's Molecular Mass ie 126 g/molExplanation:In general the equivalent weight ### how to calculate equivalent wt of Na2CO3 and NaHCO3

31 03 2008For Na2CO3 there are two Na+ atoms to react with acids Therefore in case of Na2CO3 equivalent weight is Molecular weight / 2 In the case of NaHCO3 there is only one Na+ to react with acids (You can imagine that one Na of Na2CO3 has been used by an acid) Therefore equivalent weight is Molecular weight / 1 or molecular weight itself In case