Which of the following pairs of solution would you use to prepare a buffer with pH = 7.45

Q: If (HSO, ] = .3 M, what [SO,² ] is needed to make a buffer of pH 2.6?

A:

Q: The solubility of Mg(OH)2 in a particular buffer solution is 0.66 g/L. Part APart complete What must…

A: Solubility product(Ksp) Solubility product is the concentration equilibrium of the saturated…

Q: An acidic solution containing 0.019 M La³+ is treated with NaOH until La(OH)3 precipitates. At which…

A: Given concentration of La3+ = 0.019 M Ksp for La(OH)3 = 2×10-21 We have to calculate the pH at which…

Q: A 0.025 M solution of an unknown organic acid has a pH of 3.23. 2.1 By means of a full calculation,…

A: A weak acid is one that which does not dissociates completely rather the solution contains both…

Q: A chemistry graduate student is given 125. mL of a 1.10 M chlorous acid (HCIO,) solution. Chlorous…

A:

Q: The Ka1 value of carbonic acid (H2CO3) is 4.3 x 10. Identify the Kp value of its conjugate, the…

A: We know that the dissociation constant of water Kw = Kb x Ka where, Ka = dissociation constant of…

Q: Calculate the Molar Solubility at 25.0 oC of an aqueous solution of calcium phosphate, Ca3(PO4)2,…

A: The solubility reaction for Ca3(PO4)2, is given by  Ca3(PO4)2 (s) -----> 3 Ca2+ (aq) + 2 PO43-…

Q: Suppose that the solubility of Ca(OH)2 in water is 0.3g/0.1L. What is the pH of an aqeous saturated…

A: Given that:                 Mass of calcium hydroxide = 0.3 g                               Volume…

Q: 2. Should Mg(OH)2(s) precipitate from a solution that is 0.010 M MgCl2(aq) and also 0.10 M NACH;O2?

A: SOLUTION: Step 1:  The reaction of hydrolysis of sodium acetate is       CH3COO- + H2O →CH3COOH +…

Q: What are the molar concentrations of acetic acid (CH,COOH) and sodium acetate (CH, COONA) in an…

A:

Q: You are studying an unusual enzyme that produces hydronium ions (H3O+) during the course of the…

A: This question is from ionic equilibrium. We will figure out it answer with proper explanation.

Q: What are the [H3O+] and the pH of a propanoic acid– propanoate buffer that consists of 0.35 M…

A: Given Values:

Q: Calculate the molar solubility of Ni(OH)2 when buffered at pH 10.0 ?

A: Given, pH of the solution = 10.0 We know that, pH is the negative logarithm of H+. i.e.…

Q: 134 grams of potassium sorbate KCH3 (CH)4CO2 is fully dissolved in 100.00 mL of water, which is…

A:

Q: A benzoic acid/sodium benzoate (CH COOHNB0OCC,H) buffer is prepared to 4.79x102 mol L CH;COOH and…

A: Given concentration of  Benzoic acid = 4.79x10^-2 mol/L Sodium benzoate = 4.07x10^-2 mol/L  Ka of…

Q: Determine the pH of a buffer solution that is a mixture containing 0.10M acetic acid and 0.050 M…

A:

Q: Complete the following solubility constant expression for BaSO . K = 0 sp

A: Solubility product constant is equilibrium constant when solid dissolves in aqueous solution.…

Q: If the pH of a buffer solution is equal to the pKa of the acidin the buffer, what does this tell you…

A: According to the Henderson-Hasselbalch equation, the pH of acidic buffer solution is given by  pH =…

Q: What would be the pH if 1.11 moles of hydrofluoric acid (HF) were added to 2 liters of pure water,…

A: Given :          Number of moles = 1.11          pKa = 3.2                            HF         ⇔…

Q: 2. The solubility product for the dissolution of calcium carbonate in water (ar pH-7, 20 C) is K4.8…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Calculate the pH at the stoich iometric po int of the titration of 25.00 cm3 of 0.150 M lactic acid…

A:

Q: NH3 is a weak base (Kp = 1.8 x 10³) and so the salt NHĄCI acts as a weak acid. What is the pH of a…

A: At Temperature 25°C Kb (NH3) = 1.8 × 10-5 [NH4Cl] = 0.028 M

Q: What happens when too much NaSCN is prepared in solution of mixtures of standard solutions of…

A: Fe3+ (from Fe(NO3)3 and SCN- ions (from NaSCN) react to form a complex.

Q: What is the pH of a buffer made from 0.580 mol of CH,NH, (Kb = 4.4 x 10-4) and 0.250 mol of CH;NH,1?

A: ans: PH  of solution is 11  Explanation : given:  [ch3nh2]= 0.580 mol , [ch3nh3I]= 0.250 mol ,and…

Q: Calculate the pH of a titration mixture when 25.36 mL of 0.081 M NaOH has been added to a 50.00 mL…

A: In this question we have to tell the PH of the mixture of the given solution. This solution create a…

Q: A. Which of the following acids is a weak acid? i) HI ii) H,SO, iii) HCIO, iv) Ammonia v) Acetic…

A: Answer of given 3 parts are as follows:

Q: A solution is prepared by dissolving 1.800 g of sodium acetate (CH3COONa) into 100.00 mL of a 0.180…

A:

Q: Calculate the pH of a buffer solution containing 0.67 M C3H,COOH and 0.33 M NaC3H,COO. The Ka of…

A: Given, 0.67M C3H7COOH 0.33M NaC3H7COO

Q: For each of the salts on the left, match the salts on the right that can be compared directly, using…

A: Ksp or solubility product of a sparingly soluble salt is the product of concentrations of its ions…

Q: Write the expression for the solubility constants of thefollowing compounds: (a) Agl, (b) Hg2S, (c)…

A: Given: For the given compounds, the solubility constants is asked. The compounds are,…

Q: c) What is the pH of the groundwater sample in which dichromate is óxidi2e ethanol, which is…

A: The dichromate ion present in a ground water sample is getting oxidized to chromic ion by ethanol…

Q: For a titration to be effective, the reaction must be rapid and the yield of the reaction must…

A: Interpretation- Blanks in the sentences are to be filled with appropriate options.

Q: The weak acid, HA, has a Ka of 3.00 x 10-8. What is the Kp of its conjugate base, A"?

A: Given :- Ka for weak acid HA = 3.00 × 10-8  To calculate :- Kb for conjugate base A-

Q: What mass (in grams) of sodium acetate (CH3COONa) must be added to 100.00 mL of a 0.127 M solution…

A:

Q: [20] ml of [4] M HC2H3O2 is titrated with 2.25 M sodium hydroxide. Ka for HC2H3O2 is 1.8 x 10-5 d.…

A: Given: Concentration of HC2H3O2 (assuming it HA) = 4 M The volume of HA taken = 20 mL And the…

Q: What are the [H₃O⁺] and the pH of a propanoic acid–propanoate buffer that consists of 0.35 M…

A: First of all write the  equation for given compound: CH3CH2COONa→CH3CH2COO-+Na+ CH3CH2OOH=0.15…

Q: What is the pH of a buffer that is 0.15 M in lactic acid [CH3CH(OH)COOH, or HC3H5O3] and 0.10 M in…

A:

Q: A 0.040 M NaCH3CO2 aqueous solution is mixed with a 0.080 M CH3COOH aqueous solution, where the pKa…

A: Given data is as follows: The concentration of NaCH3CO2=NaCH3CO2= 0.040 M     The concentration of…

Q: During the fermentation of wine, a buffer system consisting of tartaric acid and potassium hydrogen…

A: Buffer solution: These are the solutions that consist of a mixture of a weak base and conjugate acid…

Q: What is the pH of a buffer composed of 0.35 M H2PO4–(aq) and 0.65 M HPO42–(aq)? (Ka of H2PO4– is 6.2…

A: Ka of H2PO4– = 6.2 x10–8 pKa of H2PO4– = - log Ka = - log 6.2 x10–8 = 7.2

Q: 3.134 grams of potassium sorbate (KCH3(CH,)4CO2 ) is fully dissolved in 100.00 mL of water, which is…

A:

Q: Which of the following will raise the pH of a weak acid HA in aqueous solution? I. addition of HNO3…

A: (I) HNO3 is a strong acid and thus decreases the pH of the solution. Therefore, pH won’t increase on…

Q: Consider the following buffer system: 1.03 M H3PO4 and 0.93 M H₂PO4-. What is the pH of such a…

A: Acidic buffer :-  A mixture of weak acid and its salt with strong base is known as acidic buffer…

Q: Consider the titration of 100.0 mL of 0.200 mol/L ethanoic acid, HC2H3O2(aq) (Ka = 1.8 x 10-5), by…

A: Here 100 ml of 0.2M ethanoic acid is titrated with 150 ml of 0.1 M potassium hydroxide. We have to…

Q: What mass of sodium acetate, NACH3 CO2 , must be added to 1.00 L of 0.080 M acetic acid to give…

A:

Q: A buffer solution is prepared by taking 0.250 moles of acetic acid (pKa = 4.76) and 0.400 moles of…

A:

Q: precipitation

A: There are various type of water softening operations but in them the Lime softening method is used

Q: What is the pH of the solution when 20.0 mL of 0.155 M of NH3(aq) is titrated with 15.0 mL of 0.225…

A:

Q: Complete the following solubility constant expression for CaF2. K sp

A:

Q: The Ka of hyperchlorous acid, HClO is 3.50 X 10-8. How many grams of NaClO (molar mass = 74.5…

A: 1- First calculate the concentration of NaClO :  Using the Henderson equation,  pH = pKa +…