A student determines that the value of Ka for H2SO3 = 2.3×10-2 . What is the value of pKa?

Q: Provide an equilibrium constant for this reaction. OLi H. Li-N H-N pKa - 23 pka - 36 A. 1059 В.…

A: This is an acid base reaction where HA is the acid and B is the base. A- is the conjugate base and…

Q: What is ΔSsurr for a reaction at 19 °C with ΔHsys = -7.3 kJ mol-1 ? Express your answer in J mol-1…

A:

Q: The illustration below shows several oxygen-dissociation curves. Assume that curve 3 corresponds to…

A:

Q: The Ka for an acid is 7.91 x 10-29. Calculate the pKa for this acid.

A: The pKa for the acid is to be calculated

Q: Write the expression for Ka of H2PO4- in terms of concentration of relevant species.  H2PO4- + H2O…

A: The dissociation reaction of H2PO4- ion is H2PO4- (aq) + H2O (l) -------> HPO42- (aq) + H3O+ (aq)…

Q: The K, for acetic acid (CH,COOH) is 1.737 x 10-. What is the pK for this acid? pKa = Use the…

A: 1)          Ka(CH3COOH) = 1.737 x 10-5          pKa = -logKa = -log(1.737 x 10-5)          pKa =…

Q: The Ka for an acid is 4.45 x 10-10. Calculate the pKa for this acid.

A: Ka = 4.45 x 10-10

Q: The ionization constant Ka for formic acid is 1.77x10⁻⁴. What are the the pKa for formic acid and…

A: pKa=-log(Ka)pH of a weak acid;pH=12[pKa-logC]Where, C is concentration of the acid

Q: To 20,00 ml of 0,1250 mol/l solution of silver nitrate – 25,00 ml of 0,1000 mol/l solution of…

A: The pAg can be calculated by taking the negative logarithm of silver ion concentration. It can be…

Q: Calculate Ka values from the following pKa’s: (a) Acetone, pKa 5 19.3 (b) Formic acid, pKa 5 3.75

A: pKa = -log Ka Ka = 10-pKa   (a) Acetone, pKa = 19.3 Ka = 10-pKa Ka = 10-19.3 Ka = 5.01 x 10-20   (b)…

Q: Write the MBE, PBE and CBE for the following: a. 0.15M H2CrO4 b 0 35M KCIO,

A: Charge Balance Equation (CBE): It is based on electroneutrality principle. The molar concentration…

Q: Find the suitable base for the following reaction: CH,C(-0)CH, + :B – CH,C(=O)CH: + H:B", The pka…

A: pKa is defined as the negative logarithm of Ka. That is, pKa=-log(Ka) And, Ka measures the strength…

Q: 1.) MeMgBr (excess) 2)H, HO 3.) NaH 4.) CH "R" abbreviation for answers b.)

A: The question is based on the concept of organic reactions.   we have to identify the Product formed…

Q: Diclofenac acid has low aqueous solubility (and thus is formulated as diclotenaC sodium. It is…

A:

Q: What was the average delta t for part 1? From your observations about the experiment, which…

A: Exothermic reactions are those types of reactions in which energy is released in the form of heat…

Q: 2. Use the data below to calculate AH for the reaction N,0, + 3C0 - N,0 + 3C0, AH = ? - 110 - 393 +…

A: Since you have submitted multiple questions, we will solve only first question for you. If you want…

Q: Why does methyl orange have a lower pKa value (pKa~3.5) than methyl red (pKa ~5.1)? Provide detailed…

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Q: The pKa values of the conjugate acids of 2-aminopyridine (6.71) and 4- aminopyridine (9.11) are as…

A: It is given that 2-amino pyridine conjugate acid has a pKa value of 6.71 and 4-aminopyridine…

Q: 3. In the background troposphere (photostationary state), the concentration of O, is 50 pptv when NO…

A: The equilibrium reaction for the photostationary state is represented as: NO2⇔NO+O3

Q: Analytical Chemistry Describe the formation of plasma and its functions in ICP-MS technique

A: A plasma is essentially an ionised gas, consisting of positively-charged ions and free (unbound)…

Q: 8

A: Dear student I have given answer to your question in the image format.

Q: The K, for acetic acid (CH,COOH) is 1.737 × 10-5. What is the pK, for this acid? pKa = Use the…

A: We know that, pKa is the negative logarithm of Ka. i.e.                     pKa= -logKa We have, Ka…

Q: Construct the expression for Ksp for solid Ba₃(PO₄)₂ in aqueous solution. Ba₃(PO₄)₂(s) ⇌ 3 Ba²⁺(aq)…

A: We have given that The dissociation of Ba3(PO4)2 Ba3(PO4)2(s)  ⇌ 3 Ba2+ (aq) + 2 PO43- (aq)    the…

Q: Complete the Ksp expression for Ag,CO3. Ksp 8.46 x 10-12 –

A: Ans

Q: Determine the dissociation constants for the acids. Express the answers in proper scientific…

A: We have to calculate the dissociation constant of acid.

Q: What is the key feature of a dialysis bag needed for it to be useful for measuring the binding…

A: Answer - Equilibrium dialysis is useful for measuring small molecule binding to macromolecule . It…

Q: B: At 25°C, what is the hydronium ion concentration in the following with discussing your result:-…

A: A)For the weak acid  H+= √ka×C B) Given molecule is salt mixture of weak acid and strong base. So…

Q: Compare the relative acidity of 1-molar aqueous solutions of the following acids.NH4Cl CH3COOH…

A: The value of pka can be used to determine the acidic character of a compound. If pka is more, the…

Q: The pH of a solution containing 0,0 Na Hz VOu and D,05M Na, HVO6 Ka, = 4,11 x10? %3D Kaz- d,11x 10 T

A: Given, concentration of Na2H2VO4 = 003 M concentration of Na2HVO4 = 0.05 M Ka1 = 1.1 x 10-2 Ka2 =…

Q: pH = 7.15 + log [0.25]/[0.50] pH = pKa + log [0.33]/[0.11]; (Ka = 6.3096 x 10-8) [OH-] = 2.78 x…

A: Given : a. pH = 7.15 + log [0.25]/[0.50] b. pH = pKa + log [0.33]/[0.11]; (Ka = 6.3096 x 10-8) c.…

Q: ON i, HNO3, H,SO, ii %23 - AIcı, ii, AICI, RCOCI

A: Two reaction are given, and their product are quite different than our expectation.

Q: Species pka Species pka NH3 NH H,0 H,O* 35 15.74 9.25 -1.74

A: A base is a substance which donates electron to a species accepting electron or has a tendency to…

Q: Most of the pKa values given in this text were determined in water. How would the pKa values of…

A: The strength of a chemical substance acidity is determined by its pKa value. It is actually the…

Q: Why does methyl orange have a lower pKa value (pKa~3.5) than methyl red (pKa ~5.1)?

A: We are to discuss why pKa value of methyl orange is lower than that of methyl red.

Q: Draw the structure of the most abundant form of histidine in solutions whose pH values are 1, 3, 5,…

A: Histidine falls under the category of essential amino acid; it is mandatory to incorporate this…

Q: Determine the dissociation constants for the acids. Express the answers in proper scientific…

A: Note : As per our guidelines we are supposed to answer  first 3 part. Please repost other part as…

Q: Explain Inductive Effects ?

A: Electronic effect determines the shape of the molecule and also their reactivity. These are of four…

Q: Which of the following statements about the dissociation constant and pka is NOT correct?

A: An acid dissociation constant (Ka) is defined as a quantitative measure of an acid strength in…

Q: Explain  the reactions  involved  in separation   separation  of benzoic acid from mixture contain…

A: Extraction It is the separation technique in which the desired compound is extracted using two…

Q: 4) Will the following reaction occur? Explain. (pKa of H20 is 14, pKa of C2H2 is 25, pKa of HCOOH is…

A: (a) No, this reaction will not occur. Reason: H2O is stronger acid than C2H2 so, C2H- ion is…

Q: Why is imidazole a stronger acid (pKa = 14.4) than pyrrole (pKa ~ 17)?

A: Imidazole is an amphoteric substance that is it can act as both an acid and a base. When it acts as…

Q: Given the over-all equation below, determine the value of n. * Pb(s) + SOao) (0.30M) + 2A9CI (s) 02-…

A: In this question, we will findout the value of n ( n is number of balancing electrons between…

Q: Chemistry   0.1237 (±0.0001) g of sodium carbonate (Na2CO3) required 22.46 (±0.02) cm3 of aqueous…

A: Below attached file showing the details answer.  All the best.

Q: For an acid HA with a pKa of 5.2, what is the ratio of the concentration of the conjugate base to…

A: The dissociation reaction of acid HA can be written as  => HA ------> H+ + A-  Conjugate base…

Q: What would be the observation following mixing BaCl2 and Pb(NO3)2?

A: Mixing of BaCl2 and Pb(NO3)2  Pb(NO3)2(aq) + BaCl2(aq)  -> PbCl2 (s) + Ba(NO3)2 (aq)

Q: The dissociation constant (Ka) of a weak acid is 1.8 x 10, calculate the pKa of the this weak acid.…

A: Ka of weak acid = 1.8 × 10-5 pKa of weak acid = ?

Q: Show the derivatation of the weak acid approximation for calculating [H3O+]. Explain the basis of…

A: General weak acid ionization reaction in water is given by,

Q: Define pKa and provide at least one method for determining its value.

A: The pKa value is one method used to indicate the strength of an acid.

Q: Calculate the concentration of the following weak acids. 2) a) ethanoic acid with pH 4.53 (Ka = 1.74…

A:

Q: Using the following data: A (Chloroacetic acid) ClCH2COOH system, pKa = 2.472, Ca = 0.025M.…

A: For a chloroacetic acid system, the plot of log(C) v/s pH has been plotted using the values…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.