What is the mole ratio of sodium acetate to acetic acid in abuffer with a pH of 5.75?

Q: Calculate the pH of the solution after the addition of each of the given amounts of  0.0584 M HNO3…

A: Concentration of aziridine = 0.0750 M pKa = 8.04 First we need to calculate Kb from the pKa We know,…

Q: (a) How many grams of ammonium bromide would have to be added to exactly 500 cm³ of 0.10 M NH 3…

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Q: Put Yes for the components and NO if the component is not present. a1. NaOH a2. NaHCO3 a3. Na2CO3…

A: The solution is as follows:

Q: Give six differences between tituration and levigation

A: Six differences between trituration and levigation- 1) Triturate is the continual rubbing of a solid…

Q: Calculate the pH for a mixture of one mole of benzoic acid and one mole of sodium benzoate. The pKa…

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Q: Calculate the concentrations of acetic acid (pK₁ = 4.76) and sodium acetate necessary to prepare a…

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Q: What is the mole fraction of HA at pH 3.00 given H₂A = H+ + HA Ka1 = 1.0e-3 HA H+ + A² Ka2 = 1.0e-9

A: Suppose the initial molarity of H2A taken = C M  The equation for the 1st dissociation of H2A(aq)…

Q: Consider a diprotic weak acid system for which pK1= 3 and pK2= 9. How many moles hydroxide must be…

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Q: In a similar experiment, 5.0 (4.00 times 10 to the minus of Fe3+ was used. How ma present in the…

A: Given : Concentration of Fe3+ = 4 x 10-4 M. Volume = 5ml

Q: alculate the pH of a solution obtained by m plumes of formic acid and sodium hy- ncentration of 0.2…

A: Ka = 2.04 ×10-4 pKa = -log(Ka)   = 3.69 At same concentration of acid and base ,it forms salt.

Q: Value Enthalpy change for one mole, (AH) -58.3 kJ mol1 Density 1 M NaCl, (p) 1.037 g mL-1 Specific…

A: The balanced equation for the neutralization reaction of sodium hydroxide, NaOH and hydrochloric…

Q: How many milliliters of dry CO2, measured at STP, could be evolved in the reaction between 32.8 mL…

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Q: Why is [ H30]=[OH-]=1.0× ^ -2 not feasible in water? What would happen if we tried to make such a…

A: Pure water dissociates to give an equal concentration of H3O+ and OH- ions. Following the below…

Q: What the pH of a solution containing [H3O+] = 5.62 x 10-11 mol L-1 ?

A: Given that, for a solution [H3O+] = 5.62×10-11 mol/L. We have to calculate the pH of the solution.

Q: If the titer during the standardization procedure of HCI is 32.50 ml by using 0.2115 grams of sodium…

A: here we are required to find the percent error in the concentration of sodium carbonate

Q: How many milliliters of dry CO2, measured at STP, could be evolved in the reaction between 24.8 mL…

A: Given;

Q: Why is [ H3O]=[OH-]=1.0× ^ -2 not feasible in water? What would happen if we tried to make such a…

A: Since the water has an equilibrium with H3O+ and OH- ions as per the reaction  2 H2O (l)…

Q: Find the fraction in the form NH3 at pH 10.00.

A: pKb of ammonia, NH3 = 4.74 pKa of NH4+ =14 - pKb=14 - 4.74=9.26

Q: For the expression pH=pK₂ + log What is [A]? [B] [A] the pH = 4.130, the pka = 4.200, and [B] =…

A: Answer: Both the questions are based on the skillset of solving the mathematical equation in…

Q: A 50.00 ml of a sample of river water was titrated with 0.0015M of sodium dichromate and required…

A: Chemical oxygen demand COD)- Amount of oxygen that can be consumed by chemical reaction in a…

Q: Weighed quantity of dry potassium bromide 1,5560 gr (M=167,000 g/mol) dissolved in water with…

A: Measuring the quantity of a solution of a known concentration of titrant that is needed to react…

Q: Explain why the mixture is buffered at pH 6 to 9?

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Q: What is the percent ionization at 25 °C for a 0.00675M solution of codeine (CH2,NO)? O 18.7% O 1.54%…

A: Codeine is a weak base , to calculate its percent ionization we would first calculate draw an ICE…

Q: 3. Calculate the pK, of hypobromous acid from its Ka value. (Refer to Appendix H)

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Q: If an Ecell of 0.495V was noted when your cell was set-up. What is the solution pH?

A: pH = Ecell/0.0951

Q: Different masses of aspirin (e.g 10mg, 100mg, 1000mg) used in an acid base titration. what could be…

A: Since we are not providing the handwritten notes and according to our guidelines, we are providing…

Q: What is the value of pH for the soultion of CH3COOH and NH3 and why? In other words, in tittration…

A: An acid-base indicator (e.g., phenolphthalein) changes color depending on the pH. Redox indicators…

Q: Calculate the fraction of the triprotic acid in each of its forms at pH 5.13.

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Q: How could you distinguish solution of sodium chloride (table salt) from a solution of sodium iodide…

A: The solution of sodium chloride (table salt) from a solution of sodium iodide has to be…

Q: Kb for methylamine at 25°C is 4.4 x 10-4 what is its pH if 0.10M solution is used.

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Q: Which of the following is not standardized against sodium carbonate? a) H2SO4 b) NaOH c) HCl…

A: Which of the following is not standardized against sodium carbonate? a) H2SO4 b) NaOH c) HCl Which…

Q: Which of the following is not used to be standardized against KHP? a. H2SO4 b. NaOH c. NH3 d.…

A: The following is not used to be standardized against KHP is given below.

Q: 2. What is the physical observation when the endpoint has been achieved during titration?

A: Endpoint: refers to the point at which the indicator changes color in an acid-base titration.

Q: On strong heating ammonia dissociates into nitrogen and hydrogen, all in a gaseous state. When 0.350…

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Q: Consider a weak acid, HA, for which Ka = 7.1x10-4. Calculate [H*] in a solution that is 0.45 M in…

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Q: Ethanol is needed as solvent when preparing phenolphthalein color indicator in volumetric…

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Q: If 2 ml of 25 N H2SO4 is transferred to 50 ml volumetric flask and complete to mark with ditilled…

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Q: What volume of 0.317 M KOH solution will be required to titrate 25.00 ml of 0.285 MHNO3?

A: Recall the reaction between KOH and HNO3          KOH+HNO3→KNO3+H2O As basicity of HNO3 is 1 we can…

Q: Why is there no difference in the strength of a 0.15 M solution of HCl and a 0.15 M solution of…

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Q: What is the pH of a solution of 0.400 M CH;NH2 containing 0.140 M CH;NH31? (Kb of CH;NH2 is 4.4 ×…

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Q: 11.(a) 10.06 cm3 of the stock 0.100 mol dm–3 solution of NaOH was required to fully neutralise 49.5…

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Q: Calculate the Hö0] and OHT carcentations for cach Of your PH Valves | Hal H2D LOH! 3.00 LOS 2.10…

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Q: What is the 3rd stepwise equilibrium constant expression (Ka3) for phosphoric acid H3PO4?

A: Given polyprotic acid is phosphoric acid, The general equilibrium constant expression is given by,…

Q: Help: Identify the Lewis acid, Lewis base, conjugate acid and conjugate base for the reaction of…

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Q: Why is [H3O] =[OH- ]=1.0 x 10-2 M not feasible in water? What would happen if we tried to make such…

A: Since the water has an equilibrium with H3O+ and OH- ions as per the reaction  Hence the…

Q: When creating Alum KAl(SO4)2.H20: 30 mL of 6.0 M sulphuric acid was added to 50 mL solution of Al…

A: Alum is a hydrated salt of potassium aluminium sulfate with chemical formula KAl(SO4)2*12H2O

Q: If the hydrogen ion (H30*) activity in a system is 0.0078549423 mol/L (note the units!), then what…

A: Given that: Activity of hydronium ion (aH3O+) = 0.0078549423 mol/L