Chemistry - Acid structure

63,152 results

Chemistry - Acid structure

I'm writing up a lab report for the an experiment in the separation and analysis of an unknown mixture (acid and neutral compound). The guideline I'm looking at states "You do need to include balanced reaction(s). Since you do not know the exact structure of your acid, you may...

Chemistry

What aldehydes and primary alcohols might be oxidized to yield the following carboxylic acids: 1)p-methylhexanoic acid 2)pentanoic acid #1 should have been p-methylcyclohexanoic acid (p is para). My homework has the structure drawn out and I named it wrong. Sorry. It has a CH3...

chemistry

Write out the mechanism (using correct curved arrow notation) for the acid-catalyzed, cis-trans isomerization of maleic acid (into fumaric acid) If the electrophilic addition reaction of maleic acid with HCl had gone to completion what would be the structure of the addition ...

science

Are there any related structure from an asprin? To show how important an asprin is from using a carboxylic acid. You need to clarify your question. I need to produce a related structure of the molecular features of carboxyli acid, size hydrocarbon group on ester and distance ...

Chemistry

What is the lewis structure for Propanoic Acid?

Chemistry

What is the Lewis structure for salicylic acid ?

chemistry

write the formula of each acid and identify each as a diprotic, a triprotic, or a monoprotic acid sulfuric acid,perchloric acid,phosphoric acid,hydrofluoric acid,acetic acid

Chemistry

How many resonance structures do these following acids have? H2CO3-carbonic acid H3PO4-phosphoric acid H2SO4-sulfuric acid HNO3-nitric acid CH3COOH- acetic acid CH2ClCOOH- chloroacetic acid CHCl2COOH- dichloroacetic acid CCl3COOH- trichloroacetic acid

chemistry

Enter a chemical equation for the ionization in water of CH3CH2COOH. Is the acid strong or weak? Select the Lewis structure for the ion formed by the acid when it ionizes. Chemical equation: Note: Include physical states.

chemistry

How do you draw the structure of the reaction of 1-hexene with h2o in the presence of acid

Chemistry

Is the structure for chlorous acid H O Cl O or H Cl O ? O I was thinking that both could be correct but I am not 100% sure.

Chemistry

Is the structure for chlorous acid H O Cl O or H Cl O ? O I was thinking that both could be correct but I am not 100% sure.

Chemistry

What is the strongest intermolecular force in a sample of butanoic acid, and why? H H H O . . . .. H .C .C. C .C .O.H . . . H H H Is this structure right?

Bio Chem

The pKa of propanoic acid (propionic acid), CH3CH2COOH, is 4.87. Consider an equilibrium mixture of propanoic acid and its conjugate base with a pH of 4.87. Draw the structure of the form (acid or conjugate base) that predominates after a decrease in [H3O ]. Include all ...

Chemistry

Provide the name or chemical formula, as appropriate, for each of the following acids: a. hydrobromic acid HBr b. hydrosulfuric acid H2SO4 c. nitrous acid HNO2 d. H2CO3 carbonic acid e. HClO3 chloric acid f. HC2H3O2 acetic acid How'd I do? :)

Chemistry

Why does chloroform, under some conditions, dissolve in a mixture of acid acid and water? sorry, i meant acidic acid not acid acid.

chemistry(check my answer)

how do resonance structure related to its real structure? resonance structure is just another way to write the lewis dot with different formal charges and bond order

Chemistry

1. How do intermolecular forces differ in different alcohols? 2. Why does oxaloacetic acid has a higher Ka than succinic acid? a. fewer carboxyl groups b. a less polar structure c. addtional functional groups that make it more soluble in water d. fewer hydrogen atoms that can ...

chemistry

what is the formula for the following a) hydronitric acid b) nitrous acid c) phosphoric acid d) hydriochloric acid e) sulfuric acid?

O Chem

I need help with this question please. Draw the structure of triacylglycerol formed from oleic acid, linoleic acid, and stearic acid. Give balanced equation and show how much hydrogen would be needed to reduce the triacylglycerol completely, show the product.

CHEMISTRY

IS THIS RIGHT? Name the following binary acids: HF(aq) – Hydrofluoric Acid HCl (aq)– Hydrochloric Acaid H2Se(aq) – Hydroselenide Acid HBr(aq) – Hydrobromic Acid HI (aq)– Hydroiodic Acid H2Te (aq)- hydrotelluric acid

Chemistry

Need help with AP chemistry, specifically Acids and Bases The acid ionization constant, Ka, for propanoic acid, C2H5COOH, is 1.3  10 -5 . (a) Write the expression for the acid-dissociation constant, Ka for propanoic acid. (b) Calculate the hydrogen ion concentration, [...

Chemistry

Identify the true statement about Lewis structures. Select all the correct answers. 1. Hydrogen is usually surrounded by 4 electrons in a valid Lewis structure. 2. A single bond in a Lewis structure represents 2 electrons. 3. A double bond in a Lewis structure represents 2 ...

chemistry

what transition metal complex is responsible for transporting oxygen in our blood? Also, what is its structure? The transition metal (there are several transition series---I assume you are referring to the 3d transition metals) is iron. As to its sturcure, the iron itself has ...

Chemistry

What is the difference between an amino acid and a protein? How does this difference in structure affect biological function?

Chemistry

Predict and draw the structure of the product of the reaction of the following substrates with the given reducing agent. 2-hexanone mixed with hexanoic acid with (i) NaBH4 (ii) LiAlH4

chemistry// organic

This is a pushing question. We discussed how phenols are typically more acidic than alcohols, even though they both contain the same hydroxyl functional group, because phenols possess an aromatic ring that delocalizes the negative charge after a proton is removed. Consider the...

science-chemistry

Predict and draw the structure of the product of the reaction of the following substrates with the given reducing agent. 2-hexanone mixed with hexanoic acid with (i) NaBH4 (ii) LiAlH4

Chemistry

If 20mL of a 0.100 M NaOH solution are required to titrate 0.25 grams of an unknown acid, what is the equivalent mass of the acid? If the acid actually contains 3 moles of H+ per mole of acid what is the molecular mass of the acid?

Chemistry

Perchloric acid, HClO4, is a strong acid. What are the pH values of the following solutions: a) 3 M perchloric acid b) 0.1 M perchloric acid c) 0.001234 M perchloric acid d) 10-5 M perchloric acid e) 10-9 M perchloric acid is the pH -log(conc. ?

Chemistry (polarity)

I have to determine whether these certain chemicals are polar or not: Beta- sitosterol Methyl cinnamate Lapachol Ethyl p-hydroxy cinnamate Betulic acid 3,4,5- trihydroxy-7-methoxy flavone Veratric acid p-anixic acid If there is a website that could make determining whether ...

chemistry

Given 20g of benzoic acid contaminated with 0.4g of salicytic acid. 1)Determine the volume of hot water required to dissolve the mass of acid. 2)Calculate the mass of benzoic acid which participates when the solution is cooled to 20°C. Deduce. 3)Calculate the mass of ...

science

I need to produce a related structure of the molecular features of carboxyli acid, size hydrocarbon group on ester and distance between oxygeeb atom joined to the ring and -oh group of the carboxylic acid? I have got no ideas on where to start. Start by rephrasing your ...

chemistry

Write equations for the ionisation in water of : A) hydrobromic acid B) nitrous acid C) carbonic acid D) sulfuric acid

Grade 12 Chemistry

Caprytic acid, also called octanoic acid, is an 8-carbon fatty acid that is used as a sanitizer on dairy equipment that comes in contact with milk.The acid has a molar mass of 144.21 g/mol. An aqueous solution of the sanitizer containing 12.25 g/L has a pH of 2.98. What is the...

chemistry

Consider the Ka values for the following acids: Cyanic acid, HOCN, 3.5 ´ 10-4 Formic acid, HCHO2, 1.7 ´ 10-4 Lactic acid, HC3H5O3, 1.3 ´ 10-4 Propionic acid, HC3H5O2, 1.3 ´ 10-5 Benzoic acid, HC7H5O2, 6.3 ´ 10-5 Which of the following is the weakest base? is it ...

College Chemistry - Science

At room temperature (25°C), 45 mL of a 0.002 M acid solution reacts with 30 mL of a NaOH (aq) solution (pH = 11.95), determine (through calculations) whether the acid is phosphoric acid (H3PO4), acetic acid (CH3COOH), or carbonic acid (H2CO3).

Chemistry

How can i explain hw i can prepare a 250ml of2.5M of HCl acid from;molecular weight of acid 36.5g\mole;density of acid 1.19g\ml and degree of purity of acid 37%

Chemistry

I need to be able to tie in acetic acid and boric acid. To decipher properties of acid-base chemistry and how they adhere to Le Chatelier’s principle. I appreciate any input....

chemistry

Methanol + Butanoic acid + Sulfuric acid = Pinapple Methanol + Salicylic acid + Sulfuric acid = wintergreen Ethanol + Methanoic acid + Sulfuric acid = rum How to write the chemical formulae for each?

Chemistry

What chemical feature in the protein dictates the local secondary structure? α-helix β-pleated sheet random coils amino acid sequence pH hydrogen bonding

Chemistry

The solubility of compounds containing the carboxylic acid group can be increased by reaction with a) sulfuric acid b) nitric acid c) sodium hydroxide d) water e) benzoic acid

chemistry

predict the order of increasing acidity of the compounds. Give a brief explanation why. Butanoic acid-Nexanoic acid-Benzoic acid-Acetic acid. thx

Chemistry

which of the following statements are true? a) For an acid H-O-A : the greater the electronegativity of A, the weaker the acid HA b) For an acid H-A : the weaker the H-A bond, the stronger the acid H-A c) HF is a stronger acid than HCl d) HClO4 is a weaker acid than HClO2 e) ...

Chemistry

A 7mL triprotic acid was analyzed and found to contain 0.2572 grams of acid, evidence of phosphate group. Find the molecular weight of the acid, and identify acid. Thank you.

chemistry

Which weak acid would be best to use when preparing a buffer solution with a pH of 8.50? 1) an acid with Ka=3.3x10^-9 2) an acid with Ka=5.0x10^-4 3) an acid with KA=6.3x10^-6 4) an acid with Ka=5.0x10^-7 5) an acid with Ka=4.0x10^-5 6) an acid with Ka=2.0x10^-10

chemistry

when 1.00 g of stearic acid ( a saturated fatty acid) is dissolved in water, then diluted to exctly 10.00 ml, the PH of the resulting solution is 2.73.the fornula weight of steric acid is 284.5. calculate ka and pka for this acid

Chemistry

For acids of the same general structure but differing electronegativities of the central atoms, acid strength decreases with increasing electronegativity of the central atom. True or false

chemistry

what is the lewis dot structure for SO4 -2 and the ideal bonds, mollecular structure and hybrid orbitals?

Chemistry

For fluoracetic acid the highest Boltzmann distribution is when the dihedral angle is at 0 degrees. However, going from chloro- to bromoacetic acid, an increasing dip in the Boltzmann distribution occurs at 0 degrees. What is responsible for this "dip?" (HINT: look at how the ...

chemistry

Describe the structure of the water molecule and indicate how this structure is responsible for many of the unique properties of this vital compound.

chem

an (aq) ammonium chloride solution, rather than H2SO4, is used in the hydrolsis of the magnesium complex of 1,1-diphenylethanol to ensure that no acid catalyed dehydration occurs. write the chemical structure of the dehydration product from 1,1-diphenylethanol? -so isnt the ...

Chemistry

Consider the titration of 25.00 mL of 0.08364 M pyridine (see structure below) with 0.1067 M HCl. Find the pH at the following acid volumes (Va): 4.63 mL, Ve, and 25.0 mL. pKa = 11.3 I got 11.81, 6.63, and 1.74 respectively. Yet, the last two are incorrect and I am unsure what...

chemistry

Which of these are acidic, basic or a salt...Why? Al(NO3)3 K2CO3 NaBr NaHSO4 NH4Cl Do you know of any website I can use to help me use the atomic structure to find out whether it is an acid or base? Thanks

Chemistry

I'm looking at a protein in a 3D visualization program (PyMol). I have the full amino acid sequence list. How do I determine *where* there are hydrophobic interactions that are stabilizing the tertiary structure? I know what hydrophobic interactions are in general, and I can ...

chemistry

how to draw atomic structure for elements from scandium to zinc ?and what is their valency number.plz show me the shell structure.

Chem

What structure do you get when you mix benzoic acid with H3O+? Where benzoic acid is a benzene ring with COOH attached to one of the hydrogens in the ring? Please help!

Chemistry

Determine whether each of the following salts will form a solution that is acidic, basic, or pH-neutral? Al(ClO4)3-Acid LiCl-Neutral KClO2-BAse C6H5NH3NO2-Acid CH3NH3Br-Acid KCl-Neutral NaClO-Base NH4ClO-Acid Fe(ClO4)3-Acid C2H5NH3NO3-Acid Is this right?

Chemistry

Determine whether each of the following salts will form a solution that is acidic, basic, or pH-neutral? Al(ClO4)3-Acid LiCl-Neutral KClO2-BAse C6H5NH3NO2-Acid CH3NH3Br-Acid KCl-Neutral NaClO-Base NH4ClO-Acid Fe(ClO4)3-Acid C2H5NH3NO3-Acid Is this right?

Chemistry

What is the structure of a tripeptide where glycine is first, serine is second, and alanine is third. Draw the structure in the proper zwitterionic form.

Chemistry

What is the pH of a solution that is .060M in potassium propionic and .085M in propionic acid? Ka=1.3E-5 for the acid. The answer is +4.73 but I don't know how to go about the problem. I thought that the potassium propionic was reacting with the acid to form their conjugate ...

Chemistry

Which is more soluble in water? Briefly explain why. Acetic Acid: CH3CO(OH) OR Ethanol : CH3CH2OH I think its acetic acid because when observing its structure it is more polar than ethanol. And when using the like dissolves like rule, a more polar molecule with dissolve in ...

chemistry

A chemistry student weighs out 0.0294g of sulfurous acid H2SO3 , a diprotic acid, into a 250.mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.2000M NaOH solution.

Chemistry

To draw the lewis dot structure of H3COH3, Do I need to rearrange the formula as CH3OCH3? If not, On paper I have O H H C O C H H H I am not sure if this is the right structure.

chemistry

Polyglycolic acid, PGA, is a polymer that we know rather well how to control the structure of (even though there are currently only limited applications). So in the lab we have created two types of PGA for testing, a linear chain PGA and a branched chain PGA. Assume comparable...

Chemistry

An acid HA has Ka = 2.28 x 10^-4. The % ionisation of this acid in a 0.170 M solution of the acid in water is? An acid HA has Ka = 2.28 x 10^-4. The % ionisation of this acid in a 0.170 M solution of the acid in water is closest to a. 2.930 % b. 3.662 % c. 2.564 % d. 0.498 % e...

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 it possible to find the mols of the acid? (Balanced equation & solution please!)

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 it possible to find the mols of the acid? (Balanced equation & solution please!)

Chemistry

An unknown monoprotic acid has a pH of 2.87. Is this acid weak or strong if 22.32 mL of 0.112 M NaOH is required to titrate 25.00 mL of the acid? If the acid is weak, calculate its Ka. Answer is Ka = 1.8 x 10^-5, but I don't know how to get there. Any help would be appreciated...

Chemistry

Automobile batteries contain sulfuric acid, which is commonly referred to as "battery acid." Calculate the number of grams of sulfuric acid in 0.650 L of battery acid if the solution has a density of 1.28 g/mL and is 38.1% sulfuric acid by mass.

Chemistry

Oxalic acid & phosphoric acid are polyprotic acid. For both acids, provide the equilibrium reactions showing all of the dissociation steps and the expressions for each acid dissociation constans.

Chemistry

Acetic acid is a polar molecule and can form hydrogen bonds with water molecules. Therefore, it has high solubility in water. Yet acetic acid is also soluble in benzene (C6H6), a nonpolar solvent that lacks the ability to form hydrogen bonds. A solution of 3.8g of CH3COOH in ...

Chemistry

Would heating a tertiary alcohol change its structure and reaction with hydrochloric acid and potassium permanganate (KMnO4)? Tertiary alcohols resist oxidation, but can be oxidised by reagents such as 2,3-dichloro-5,6-dicyano-1,4-benzoquinone.

Chemistry

What is the pH of the solution created by combining 2.00 mL of the 0.10 M base[ammonia] with 8.00 mL of the 0.10 M acid[acid acid]? I tried this problem so many times, but always got it wrong. It's a weak base and acid titration. but i don't know the method of do this type of ...

Chemistry

Use the MO model to predict the structure of ketene (H2CCO). Draw a Lewis structure of the molecule that shows the positions of the orbitals and the atoms in three-dimensional perspective.

Chemistry

Use the MO model to predict the structure of ketene (H2CCO). Draw a Lewis structure of the molecule that shows the positions of the orbitals and the atoms in three-dimensional perspective.

biology

I need help finding diagrams of the leaf structure, stem structure and root structure of a lilac flower with explanations. Sites would help

O-Chem 253

I hydrolized the following compound: cis-norbornene-5,6-endo-dicarboxylic anhydride then took the cis-norborene-5,6-endo-dicarboxylic acid and added H2SO4 to it (warmed it up and cooled it) then added drop by drop water (then I reheated the mixture and crystallized it again). ...

chemistry

propanoic acid ch3ch2cooh is a weak acid which has a value for dissociation content of ka = 6.3 x 10^-6 calculate the pH of an aqueous solution of propanoic acid containing 37 g of propanoic acid per litre. i'm stumbled on this one.. i calculated that the concentration of the ...

chemistry

Ascorbic acid is a weak organic acid also known as vitamin C. A student prepares a 0.20 mol/L aqueous solution of ascorbic acid and measures its pH as 2.40. Based on this evidence, what is the Ka of ascorbic acid?

Chemistry

Calculate the percent ionization of nitrous acid in a solution that is 0.311 M in nitrous acid (HNO2) and 0.189 M in potassium nitrite (KNO2). The acid dissociation constant of nitrous acid is 4.50 × 10-4.

chemistry

Lactic acid, HC3H5O3(aq) is a weak acid that gives yougurt its sour taste(Yeeeeecccckkk). Calculate the pH of a 0.0010 mol/L solution of Lactic acid. The Ka for lactic acid is 1.4 x 10^-4

chemistry

concentrated aqueous sulphuric acid is 98% sulphuric acid by mass and has a density of 1.80 g/l. Volume of acid required to make one litre of 0.1M sulphuric acid solution is

Chemistry

An unknown solid acid is either citric acid or tartaric acid. To determine which acid you have, you titrate a sample of the solid with NaOH. The appropriate reactions are as follows: Citric acid: H3C6H5O7 (aq) + 3NaOH (aq) -> 3H2O (l) + Na3C6H5O7 (aq) Tartaric acid: ...

Chemistry

A 7.52 g sample of an aqueous solution of hydrobromic acid contains an unknown amount of the acid. If 13.5 mL of 0.633 M barium hydroxide are required to neutralize the hydrobromic acid, what is the percent by mass of hydrobromic acid in the mixture?

Chemistry

A 7.52 g sample of an aqueous solution of hydrobromic acid contains an unknown amount of the acid. If 13.5 mL of 0.633 M barium hydroxide are required to neutralize the hydrobromic acid, what is the percent by mass of hydrobromic acid in the mixture?

Chemistry please help

How would an HA acid behave in water if it were a strong acid, weak acid, and non-electrolyte?

chemistry

What is the general form for the simplest type of acid-base reaction? A. acid + base salt + water B. acid + base base + acid C. acid + base H+ + OH- D. acid + base solid + water

chemistry 12

The pH of a certain acid having a concentration of 0.20M was measured. The pH was 2.50. Was this a strong acid or weak acid?

chemistry

Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution containing 0.065 mol citric acid (H3A), 0.025 mol 8-hydroxyquinoline (HB), and 0.040 mol KOH. Consider just acid-base chemistry. Ignore ion pairing and activity ...

Chemistry (Acid/Base)

Consider a solution made by mixing 100 mL of 2.0 M acetic acid (Ka= 1.8e-5) with 100 mL of 0.00020 M benzoic acid (Ka= 6.4e-5). How many moles of solid NaOH must be added to the solution so that half of the benzoic acid is protonated (i.e. such that [HA] = [A-] for benzoic acid)?

Chemistry

Predict whether the Ph endpoint is =7 >7, or<7 for each of the following acid-base titrations. Justify you predictions a) hydroiodic acid with sodium hydroxide. b)boric acid with sodium hydroxide c) hydrochloric acid with magnesium hydroxide d) hydrochloric acid with ...

Chemistry

Citric acid H3C6H5O7, occurs in plants. Lemons contain 5% to 8% citric acid by mass. The acid is added to beverages and candy. An aqueous solution is 0.688m citric acid. The density is 1.049 g/ml. What is the molar concentration?

Chemistry

Citric acid H3C6H5O7, occurs in plants. Lemons contain 5% to 8% citric acid by mass. The acid is added to beverages and candy. An aqueous solution is 0.688m citric acid. The density is 1.049 g/ml. What is the molar concentration?

chemistry

Methanoic acid HCO2H(aq) also known as formic acid, is partly responsible for the characterisitic itchy rash produced by the leaves of the stinging nettle plant. Calculate the pH of 0.150 mol/L methanoic acid. The Ka for methanoic acid is 1.8 x 10^-4.

chemistry

Methanoic acid HCO2H(aq) also known as formic acid, is partly responsible for the characterisitic itchy rash produced by the leaves of the stinging nettle plant. Calculate the pH of 0.150 mol/L methanoic acid. The Ka for methanoic acid is 1.8 x 10^-4.

chemistry

A 0.010 M solution of a weak monoprotic acid has a pH of 3.70. What is the acid-ionization constant, Ka, for this acid? a. 2.0 ´ 10-4 b. 2.0 ´ 10-5 c. 4.0 ´ 10-6 d. 4.0 ´ 10-7 e. 4.0 ´ 10-8

Chemistry

Can the 5% approximation be used to determine the pH of the following solutions? How do I do this question? (A) 0.56 M hypochlorous acid - yes (B) 3.00 M nitrous acid - yes (C) 0.010 formic acid - no

chemistry

presentation Tasks:  Ephedrine (structure see below) is a natural product that is used as a medicine in the treatment of asthma. The corresponding acid to ephedrine have pKa = 9.60 at 25 ° C.   Question:  Calculate the pH reaches 991 mg ephedrine dissolved in 50.0 mL of ...

Chemistry Lewis Structure

What is the lewis structure for In+? I have tried everything and the answer seems wrong? Please help me

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