Weak acids do not dissociate completely in water and have pKa values of - 3 or higher. Which of the following acids is a weak acid? А. HNO3 В. НС C. H2SO4 . H2CO3

Q: Rank the following bases in order of INCREASING base strength: Base Kb I. F- 1.6е-11 II. (CH3)2NH…

A: We are given value of Kb and we have to determine the base strength.

Q: 2.4 8 (a) Define in words the following: (1) Ka (ii) p.Ka I (b) Calculate the pH of 0.0005 mol dm³…

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Q: The three pKa’s for phosphoric acid (H3PO4) are 2.1, 6.9, and 12.4. At what pH does [H3PO4]…

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Q: Sulphuric acid (H2SO4) has a PKa of -3. a) Write an equation showing how sulphuric acid can act as…

A: Sulphuric  acid is a very strong Acid as it can easily dissociate  into H+ ion .

Q: Rank the acids in increasing pKa. (lowest pKa first) NH3 OH2 NH3 OH2 NH3 NO2 NO2 ÓCH3 1 2 4 5

A: Given

Q: Which one of the following will have the strongest conjugate base? HF (Ka = 6.8 x 10 %3D CH3COOH (Ka…

A: The weaker the acid, the stronger it's conjugate base. A large Ka value indicates a strong acid…

Q: A 0.050 M solution of sodium meta-toluate (NaTol) has a pH of 8.47. What is the Kb of meta-toluate…

A: Sodium meta-toluate solution is formed on mixing of sodium hydroxide and meta-toluic acid. Sodium…

Q: Calculate the pH and % ionization for the following a. 0.10 M CH3NH2; pKa = 10.657 b. 0.02 M…

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Q: When ammonium (NH4+) is placed in water, a chemical reaction occurs and an equilibrium is…

A: By applying the Henderson Hasselbalch equation, we can predict the predominant form.

Q: ow does the pKa of an acid change as very electronegative atoms (such as Cl) are added to the acid…

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Q: The weak acid HQ has a pKₐ of 4.89.(a) Calculate the [H3O⁺] of 3.5X10⁻² M HQ.(b) Calculate the…

A: Calculation of dissociation constant:

Q: If the Ka1 value of chronic acid (H2CrO4) is 0.16 and its Ka2 value is 3.2x10^-8, what is the value…

A: Given ; values of Ka1 and Ka2

Q: Fumaric acid and malonic acid are both diprotic acids. a. Sketch the general shape of the curve for…

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Q: Which acid is stronger?  Why?    carbonic acid (Ka=4.2 x 10 -7) or formic acid (HCOOH, Ka=1.8 x…

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Q: The pka of formaldehyde (H2C=0) is not listed in Table 6-1. (a) Based on your understanding of…

A: a.

Q: Which one of the following is the weakest acid? O HF (Ka = 6.8 × 10-4) HCIO (Ka = 3.0 x 10-8) O HNO2…

A: Lower the value of acid dissociation constant (Ka), lower the concentration of H+ ions.  Hence, we…

Q: 2. Below is adenine, one of the four nucleobases which make up the alphabet for DNA and RNA. Is the…

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Q: Sketch the general shape of the curve for a diprotic acid with Ka1 >> Ka2.  Explain how to determine…

A: volumetric Analysis

Q: Consider two acids: HCO,H (formic acid, pKa = 3.8) and pivalic acid [(CH3)3CCO2H, pKa = 5.0]. (a)…

A: Given in the question, Formic Acid, HCOOH = pKa = 3.8 Pivalic Acid,, (CH3)3CCO2H = pKa = 5.0 As we…

Q: Complete the following table, which lists information about the measured acid dissociation constants…

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Q: At a temperature of 298K the value of Ka for ethanoic acid is 1.70 * 10Smoldm. c. Calculate the pH…

A: 1. Ka for ethanoic acid = 1.70 * 10-5 mol/dm3 = 1.70 * 10-5 M [ethanoic acid] = 0.350  mol/dm3 =…

Q: A diprotic acid (H,A) has pKa values of 3.40 (pKal) and 6.80 (pKa2). Which of the equalities is true…

A: Answer: This question is based on the dissociation of polyprotic acid and how variation in pH…

Q: Consider two acids: HCO2H (formic acid, pKa = 3.8) and pivalic acid [(CH3)3CCO2H, pKa = 5.0]. (a)…

A: a. We know that smaller the pka value larger is the Ka value and larger the ka stonger the acid . So…

Q: For each value of Ka, calculate the corresponding value of pKa. Which compound is the stronger acid?…

A: pKa of any acid can be calculated as: pKa=-logKa Ka is dissociation constant of an acid. Larger the…

Q: Assuming that base (B:) and acid (AH) are mixed in equal concentrations and using pka values of acid…

A: pKa for AH = 4.7 pKa = -log Ka Ka = 10-pKa Ka1 = 10-4.7 = 2×10-5   pKa for BH+ = 5.1 Ka2 = 10-5.1 =…

Q: beginning with arecoline (pKa:7.6), Show the acid dissociation equilibrium reaction for arecoline in…

A: Structure of arecoline:

Q: 2. Out of the following, which is incorrect? a) The Ka of an acid-base pair conjugate characterizes…

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Q: Find the pKa of the acids (or conjugate acids of the given base) below. Then, draw the form that is…

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Q: (a) Given that Kb for ammonia is 1.8 x10-5 and that forhydroxylamine is 1.1 x 10-8, which is the…

A: (a) The Ka and Kb are the dissociation constants of acids and bases respectively. Hence, higher the…

Q: Indicate whether a carboxylic acid (RCOOH) with a pKa value of 4.5 has more charged molecules or…

A: Henderson-Hasselbalch equation explains the relationship between pH of solution and pKa of acid. For…

Q: For each value of pKa, calculate the corresponding value of Ka. Which compound is the stronger acid?…

A: Imagine an acid HA. Assume it dissociates in the following way- HA ⇌ H+ + A- The acid dissociation…

Q: 3. Dimethylamine (CH3)2NH is a weak base with a pKa of 11.0 Calculate the pH of a solution of…

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Q: Indicate if each set of lone pair electrons on the heteroatoms are basic or not basic. N. :0

A: If lone pair is not a part of resonance so it will be basic.

Q: The pka values of 4 acids are given below. Acid НА1 НА2 НАЗ НА4 pKa 4.76 3.45 7.63 5.23 Which of the…

A: More is the value of pKa weaker is the acid ,and vice versa.

Q: Chloroacetic acid, HC₂H₂O₂Cl, is a stronger monoprotic acid than acetic acid. In a 0.10 M solution,…

A: We have to calculate the Ka of chloroacetic acid and aso it PKa value .

Q: 1. What are two weak acids that have a similar structure? 2. What is their PKA? 3. Which is more…

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Q: Consider the Ka values for the following acids: Cyanic acid, HOCN, 3.5 × 10–4

A: Weak acids do not ionized completely , 100 % dissociation does not takesplace , an equilibrium is…

Q: Acid Conjugate base Acid H2CO3 HCO3 Base Strength Strength Increases Increases H2PO4 HPO,- (1) The…

A: Ka is the tool to measure the acidic strength of a given acid

Q: Compare the strengths of the following pairs of acids: (a)H2SO4 & H2SeO4 (b) H3PO4 & H3AsO4-

A: a.

Q: 3.) Based on the structure of its conjugate base, which acid has the lowest pKa? A. CH3COOH В.…

A: AH         =                  A-                  +               H+ Acid                 Conjugate…

Q: A 2.5 M solution of formic acid (HCOOH) has a pH of 1.67. What is the pK, of the formate ion…

A: Welcome to bartleby ! We have to calculate pKb

Q: Chemistry beginning with arecoline (pKa:7.6), Show the acid dissociation equilibrium reaction for…

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Q: Calculate the pH at 25°C of a 0.59M solution of potassium cyanide KCN . Note that hydrocyanic acid…

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Q: Which of the following is the strongest acid? A) NH4+, Ka = 5.6 × 10−10 B) HOCl, Ka = 4.0 × 10−8…

A: The dissociation constant for acid, Ka is higher, stronger is the acid.

Q: Complete the following table, which lists information about the measured acid dissociation constants…

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Q: 14. If the pH at half way to the first equivalence point is 3.20, pH at first and second equivalence…

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Q: Rank the compounds from lowest pka (most acidic) to highest pka (least acidic). HO OH HO HO II II IV…

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Q: What concentration of formic acid will result in a solution with pH=1.90? The value of Ka for formic…

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Q: A weak monobasic acid is half neutralized by a strong base. If the pH of the solution is 5. 4, its…

A: The question is based on the concept of titrations. we are titrating a weak acid and a  strong base.…

Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red. 

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.