US3394058A

US3394058A US48560065A US3394058A US 3394058 A US3394058 A US 3394058A US 48560065 A US48560065 A US 48560065A US 3394058 A US3394058 A US 3394058A Authority US United States Prior art keywords acetic acid water formic acid weight acid Prior art date 1964-09-11 Legal status (The legal status is an assumption and is not a legal conclusion

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Tex

acetic acid) used in the procedure for determining the epoxy equivalent or amine value Standardizing Titrant Step Action 1 Prepare the 0 1 N HBr in glacial acetic acid by adding 8 g of hydrobromic acid to 500 mL (16 9 fl oz ) of acetic acid 2 Analytically weigh 0 4 0 005 g of potassium acid phthalate into a 50 mL (1 7 fl oz ) Erlenmeyer

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what is the equivalent mass of acetic acid?

11/03/2009Acetic acid: one million 049 g/mL at 20 deg C 5 mL x one million 049 g/mL = 5 245 g acetic acid 5 245 g / 60 05 g/mol = 0 0873 moles in step with one hundred mL pattern 0 873 moles in step with liter Vinegar is 0 873 molar even nevertheless 5% is one million important determine so 0 9 M is the wonderful answer

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Calculate the equivalent weights of acetic acid (CH3COOH

24/04/2013equivalent weight of acid = molecular mass/no of replaceable H+ so for CH3COOH equivalent weight = molecular mass of CH3COOH/1 and for adipic acidequivalent acid = molecular mass of HOOC(CH2)4COOH / 2 0 1 0 Login to reply the answers Post degross Lv 4 3 years ago Equivalent Weight Of Acetic Acid Source(s): https://shrinkurl im/a9o0x 0 0 0 Login to reply

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Equivalent weight and pka

1) Calculate the [H 3 O +] and the pH for 0 462 M acetic acid (K a for acetic acid = 1 8 x 10-5) First set up the REACTION: Note that the arrow in the above reaction is a forward/backward arrow since acetic acid is a weak acid The arrow indicates that the reaction does not proceed completely to the right

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What isGram equivalent of acids and base

Equivalent weight(E) of acid= (molecular weight of acid)/basicity e g E H2SO4 = (molecular weight of H 2 SO 4) / (basicity of H 2 SO 4) =98/2=49 Equivalent weight(E) of base= (molecular weight of base)/acidity e g E NaOH = (molecular weight of NaOH) / (acidity of NaOH)=40/1=40 When equivalent weight is expressed in grams is called gram equivalent weight

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Determination of equivalent weight of epoxides

Determination of equivalent weight of epoxides Full Record Other Related Research Abstract Hydrogen bromide is generated in situ by the addition of perchloric acid to quaternary ammonium bromide The HBr rapidly opens the oxirane (epoxide) ring The excess hydrogen bromide is sensed and indicated by the electrode couple in the potentiometric titration 2 refs Authors: Selig W S

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CHEM

Hence their equivalent weights are 1/1 =1 40/2 = 20 and 16/2 = 8 respectively Equivalent weight of an acid The valence factor of an acid is equal to its basicity The basicity of an acid is equal to furnishable hydrogen ion (proton) in its aqueous solution Importantly basicity is not same as the number of hydrogen atoms in acid molecule Consider acetic acid (CH3COOH) It contains 4

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equivalent weight of citric acid calculation?

16 02 2016Molecular formula of Citric acid is C6H8O7 and its molecular weight is 192 grams/mole Citric acid has 3 acidic radicals -COOH which can react with 3 OH base radical and will get neutralized so equivalent weight of Citric acid is its molecular weight / acidity that is 192 gmmol/3 = 64 unlike anhydrous acetic acid of equivalent weight of 60

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Acetic acid

Acetic acid as an active substance has been considered under the fourth stage of the re-evaluation programme of the Plant Protection Product Directive 91/414/ EEC (provisions of Regulation (EC) No 1112/2002) for use as a herbicide on e g pome and stonefruit ornamental shrubs paths The decision has been made that it is included in Annex I of that Directive (Commission Directive 2008/127

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Solved: 3 Complete The Following Table Compound

atomic weight = equivalent weight x valency equivalent weight of acid = molecular mass / no of replaceable H+ so equivalent weight for acetic acid (CH3COOH) equivalent weight = view the full answer Previous question Next question Transcribed Image Text from this Question 3 Complete the following table Compound MW equivalents mmol mL Acetic acid conc 40 05 (glacial) alcohol 71 I2

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Acid

Equivalent Weight (EW) Theoretical EW = Molecular Wt/# ionizable protons Examples: H 2 SO 4 = molecular weight of 98 H 2 SO 4 = equivalent weight of 49 HCl = molecular weight of 36 5 HCl = equivalent weight of 36 5 Unknowns and Carboxylic Acid Structure • Benzoic acid • COOH • • • No ionizable protons Not an acid One ionizable proton

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Tex

acetic acid) used in the procedure for determining the epoxy equivalent or amine value Standardizing Titrant Step Action 1 Prepare the 0 1 N HBr in glacial acetic acid by adding 8 g of hydrobromic acid to 500 mL (16 9 fl oz ) of acetic acid 2 Analytically weigh 0 4 0 005 g of potassium acid phthalate into a 50 mL (1 7 fl oz ) Erlenmeyer

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DETERMINING EPOXIDE EQUIVALENT AND AMINE VALUE OF

DETERMINING EPOXIDE EQUIVALENT AND AMINE VALUE OF RESINS TXDOT DESIGNATION: TEX-815-B CONSTRUCTION DIVISION 2 – 3 LAST REVIEWED: OCTOBER 2014 Note 1—The presence of water at any time in this procedure will invalidate the results Cloudiness in the sample or test solutions indicates the presence of water 4 PROCEDURES 4 1 Standardizing Titrant: 4 1 1 Prepare the 0 1 N HBr in glacial acetic

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An equivalent weight of an acid is the mass of the acid

The average equivalent weight of the acid using the data below is g/equiv 1 2 3 mass of unknown acid (g) 1 020 0 522 0 742 vol NaOH used (ml) 27 72 14 22 20 02 asked by Confused on April 1 2008 Chemistry 10 0 g of an unknown acid is titrated to the equivalent point using 65 0 ml of 0 150M KCH Assuming the acid is monoprotic ( like HCL or HF ) what is the molecular mass of the acid? Is

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DETERMINING EQUIVALENT WEIGHT OF AN ORGANIC ACID

DETERMINING EQUIVALENT WEIGHT OF AN ORGANIC ACID OR BASE Acids and bases with ionization constants of greater than about 10-7 to 10-8 (pK values 7-8) and which are soluble in water (i e Sa Sb and S2 groups) can be titrated with good accuracy in aqueous media using standard solutions of strong acids (aq HCl etc ) or strong bases (aq NaOH)

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Acetic anhydride

Acetic anhydride is an esterification agent for use in prepn of modified food starch and for acetylation of monoglycerides Acetic anhydride is a versatile reagent for acetylations the introduction of acetyl groups to organic substrates In these conversions acetic anhydride is viewed as a source of CH 3 CO + Alcohols and amines are readily acetylated

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Analytical Chemistry

Analytical Chemistry Lecture No 3 Date :9 /12/ 2012 Dr Mohammed Hamed 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 molecular weight Molecular weight Equivalent weight = ----- Basicity Equivalent weight of a dibasic or a tribasic acid is and

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Vinegar Intake Reduces Body Weight Body Fat Mass and

Acetic acid (AcOH) a main component of vinegar recently was found to suppress body fat accumulation in animal studies Hence we investigated the effects of vinegar intake on the reduction of body fat mass in obese Japanese in a double-blind trial The subjects were randomly assigned to three groups of similar body weight body mass index (BMI) and waist circum-ference During the 12-week

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Solved: 3 Complete The Following Table Compound

atomic weight = equivalent weight x valency equivalent weight of acid = molecular mass / no of replaceable H+ so equivalent weight for acetic acid (CH3COOH) equivalent weight = view the full answer Previous question Next question Transcribed Image Text from this Question 3 Complete the following table Compound MW equivalents mmol mL Acetic acid conc 40 05 (glacial) alcohol 71 I2

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CHEM

Importantly basicity is not same as the number of hydrogen atoms in acid molecule Consider acetic acid (CH3COOH) It contains 4 hydrogen atoms in it but only 1 furnishable hydrogen ion As such basicity of acetic acid is 1 With this background we define equivalent weight of an acid as : Equivalent weight E =

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Ethyl acetate

Reactions Ethyl acetate hydrolyses to give acetic acid and ethanol Bases accelerate the hydrolysis which is subject to the Fischer equilibrium mentioned above In the laboratory and usually for illustrative purposes only ethyl esters are typically hydrolyzed in a two-step process starting with a stoichiometric amount of a strong base such as sodium hydroxide

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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

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volume of perchloric acid solution ml- constant ml- to L constant chemical factor Record the weight to 0 0001 g as K (Figure 1 or Figure 2) Add 50 ml- of glacial acetic acid and warm on low heat until the sample is dissolved Allow to cool and use an additional 50 ml- of glacial acetic acid to wash down the side of the beaker

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