A student is carrying out a biological preparation that requires 1 M NaCl to maintain an ionic strength of 1.0. The student chooses to use 1.0 M ammo- nium sulfate instead. Why is this a serious error?
Q: Given a solution containing 0.010 M CaCl2 and 0.020 M MgCl2, what formula should be used to…
A: Solution properties are reliant on both ions, the activity coefficients of the cation and anion…
Q: What is the activity (not the activity coefficient) of the CI ion, assuming complete dissociation in…
A: Calculation of activity (a) a=cγa=activityc=concentrationγ=activity coefficient Calculation of…
Q: Explain why the ionic strength of a 0.10 molar CaCl2 solution is greater than the ionic strength of…
A: Concentration of CaCl2 = 0.10 M Concentration of NaCl = 0.10 M
Q: 6. Estimate the mean ion activity coefficient and activity of a solution that is 0.01 mol/kg CaCl2…
A:
Q: 5. What is the activity coefficient of Ba2+?
A: Given-> Molarity of BaCl2 = 0.025 M
Q: Show by calculation how could you prepare 250 ml of 0.1N Na,CO; from the solid primar standard of…
A:
Q: What is the ionic strength of a 0.100 M solution of Na,SO4 with 0.2 M KI? Ou-0.500 OH 0250 OH-0.200…
A: Ionic strength μ = 1/2 ΣciZi2 ci = concentrations Zi = charges
Q: the ionic strength of a 0.05F H3PO4
A:
Q: A solution is 0.5 molar in MgSO4, 0.1 molar in AICI3, and 0.2 molar in (NH4)2SO4. What is the total…
A:
Q: If the test tube used in the determination of the ΔHrxn for nitric acid (neutralization with NaOH)…
A: Given: The test tube used in the determination of the ΔHrxn for nitric acid (neutralization with…
Q: Calculate the activity coefficient of K* in 0.050 M KNO3.
A: Given: 0.050M KNO3 To find: activity coefficient of K+.
Q: Calculate the masses of (i) KNO3 and, separately, (ii) Ba(NO3)2 to add to a 0.110 mol kg−1 solution…
A: The ionic strength of the solution is given as
Q: An equimolar solution of ammonium sulfate, sodium chloride and magnesium nitrate has ar ionic…
A: Suppose the concentration of each solution is M since solutions are equimolar. Hence concentration…
Q: What is the ionic strength of a 0.100 M solution of Na,SO4 with 0.2 M KI?
A:
Q: The molar conductivity of a 0.05 M solution of a weak base (B) is 4.9 x 10-1 mSm2/mol and the sum of…
A:
Q: The ionic strength of an aqueous solution containing 0.0087 M NaCI and 0.0020 M La(IO3)3 is: O a.…
A:
Q: The ionic strength of an aqueous solution containing 0.0087 M NaCl and 0.0020 M La(103)3 is: O a.…
A: We will calculate Ionic strength
Q: Calculate the ionic strength of 0.2 M CaCl2
A:
Q: An aqueous solution is prepared by mixing 20.0 mL of 0.0065 M K3PO4, 30.0 mL of 0.015 M NaCl, and…
A: [K3PO4] = 0.0065 M Vol of K3PO4 = 20.0 mL Millimoles of K3PO4 =…
Q: If K-2.35 & K,- 1.32 x 1010 Suppose 50ml of 0.010M aqueous amine is extracted with 100ml of benzene.…
A: Given: K = 2.35 Ka=1.32×10-10 Volume of aqueous amine = 50 mL Volume of benzene = 100 mL…
Q: Explain why the activity coefficient for a neutral molecule is usually 1.
A:
Q: Write the relevant chemical reaction and mass-balance expression for 0.1 M NaCl and 0.1 M NaH2PO4.
A: Sodium Dihydrogen Phosphate + Sodium Chloride = Nahpoite + Hydrogen Chloride 0.1 M of aqueous Sodium…
Q: Consider the reaction of 75.0 mL of 0.350 M C₅H₅N (Kb = 1.7 x 10⁻⁹) with 100.0 mL of 0.393 M HCl.…
A:
Q: Sketch a plot of the fraction of species, f, vs pH for Tyr. Show your calculations for several…
A: Answer -
Q: What is the pH and fraction of association of a 0.100 M solution of a weak base with Kb = 1.00 X…
A:
Q: What is the ionic strength of 0.10 M ZnSO4?
A: A chemical compound consists of two or more different elements which are bonded with each other…
Q: (D) Liquid water molecules tonises follows H,0(24) Ha) + OHag) expression for ionic product of water…
A: We know that water ionizes in an aqueous solution to give H+ and OH- Now we have to use the…
Q: Calculate the activity coefficient of K+ in 0.050 M KNO3.
A:
Q: Calculate the ionic strength of 0.01818 M Na2CO3 + 0.0505M NaCl + 0.0202 M K2SO4
A: The formula used to calculate the ionic strength is as follows,
Q: What is the ionic strength of 0.50 M Al2(SO4)3 + 0.10 M Na2SO4?
A: A chemical compound consists of two or more different elements which are bonded with each other…
Q: Calculate the alkaline strength of pearl ash (impure potassium carbonate) in terms of percent K2O…
A:
Q: How can the matrix effects affect the determination of phosphate in seawater by using AAS
A: A question based on analytical process that is to be accomplished.
Q: A student is carrying out a biological preparation that requires 1M NaCl to maintain an ionic…
A: Given information: Ionic strength = 1 Concentration of NaCl = 1 M
Q: Condition of permanganatometric titration of sodium oxalate includes: pH = 1 and heating of analyte…
A: Permanganatometric titration is a technique used in chemical quantitative analysis. It is a type of…
Q: The ionic strength of 0.30 M NaCl is: O 0.30 O 0.10 O 0.40 O 0.60 O 0.70
A: Given: Concentration of NaCl = 0.30 M Since NaCl is an ionic compound which will dissociate…
Q: The mean ionic activity coefficient for 0.1 M H2SO4 is 0.265. Calculate the activity of H2SO4
A: Given: Conc. Of H2SO4 = 0.1 M
Q: The activity of a 0.05m CaCl, solution .4 :that has a mean ionic activity of 0.58 is
A: GivenMean ionic activity of CaCl2 = γ = 0.58Concentration of CaCl2 solution = m = 0.05mActivity of…
Q: What is the mole ratio of sodium acetate to acetic acid in abuffer with a pH of 5.75?
A:
Q: Calculate the ionic strength of a solution that is 0.10 mol kg−1 in KCl(aq) and 0.20 mol kg−1 in…
A: The given data contains, moles of the solution in KCl = 0.10 mol kg-1 moles of the solution in…
Q: For a solution in which ionic strength, u = 5.0 x T
A:
Q: The activity coefficient of Ni²+ ion (a Ni2* =0.6 nm) in a solution that has an ionic strength of…
A:
Q: What is the numerical value of the activity coefficient of aqueous ammonia (NH,) at an ionic…
A: To find the numerical value of activity coefficient of aqueous ammonia (NH3) at an ionic strength of…
Q: What is the activity coefficient of a sulfate ion in a solution that is 0.01667 M Na2SO4
A:
Q: What is the activity coefficient of hydroxide for a solution containing 0.0020 M potassium hydroxide…
A: The chemical reactions taking place are: KOH → K+ + OH-CaCl2 → Ca2+ + 2Cl- Calculating the ionic…
Q: For a gravimetric determination of a soluble sulfate, Why choose Na2SO4 be the assume sample?
A: Gravimetric analysis is a method of determination of analyte through measurement of mass.
Q: Calculate the masses of (i) KNO3 and, separately, (ii) Ba(NO3)2 to add to a 0.110 mol kg−1…
A: According to the definition of ionic strength, We have two ions, K+ and NO3-, with charges of z=+1…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- The Ksp of Fe(OH)3(s) is 3 × 10-39. What concentration of Fe3+ can exist in solution at pH 3.0?3) One of the main buffer systems found in living organisms is the phosphate buffer system, often used in biological research to mimic cellular conditions. The phosphate equilibrium reactions and their corresponding pKa's are as follows: H3PO4 = H* + H2PO, H2PO, = H+ + HPO?- HPO- = H+ + PO;- pKa1 pКаz —D 7.21 = 12.44 = 2.12 pKa3 (a) Given the above chemical reaction, write out the expression for K, of the buffer system which would predominate at neutral pH conditions. Justify your choice. (b) The human body, and many other lifeforms, prefer an internal pH of 7.2 to maintain homeostasis. However, some more acid-tolerant or basic-tolerant organisms can survive (and sometimes thrive) within different ranges of pH. Calculate the mass and moles of the correct acid and corresponding conjugate base solid (assume you have sodium salts of each base: NaH,PO4, Na,HPO4, and Na PO,) which are needed to make 500 mL of a 0.5 M buffer solution (0.5 M total, including the concentration of acid and base…6-39. An acidic solution containing 0.010 M Lat is treated with NaOH until La(OH), precipitates. At what pH does this occur?
- The Ksp for SrF2 is 2.45 x 10-9. Use this information to calculate the solubility of Strontium Fluoride in water (find the [Sr2+] and [F-] at equilibrium). SrF2 (s) Sr2+ (aq) + 2F- (aq) I C Eformic acid (0.24mol) is placed in 2L of water and undergoes the following reaction:HCHO2(aq)+H2O(l) - H3O+(aq)+ CHO2-(aq) Kc= 2.1*10-4. (a) use your solver to calculate the equilibrium concentration of hydronim ion in this solution? (b) Approximate the answer to this problem by assuming x is small. show your work.You are viewing Sonjae Wallace's screen REC View Options Q8: Level 3+ (Unit 13, L.G. 11) Given the following information: O1 + H,0 = HOI + OH H,0 = %H;0* + ½OH K, = 5 x 104 K2 = 1 x 107 What is the value of K for the rxn HOI + H,0 = 01+ H,0*? A. 2 x 10-11 B. 5 x 10 11 C. 2x 10-4 D. 4 x 104 To: Type P Type here to search a brt %23 * 4 5 Q Y. LL M alt alt ctri
- The following equilibrium constants have been determined for hydrosulfuric acid at 25oC ; H2S(aq) ↔ H+(aq) + HS-(aq) Kc’ = 9.5x10-8 HS-(aq) ↔ H+(aq) + S2-(aq) Kc’’ = 1.0x10-19 Calculate the equilibrium constant Kc for the following reaction at the same temperature. H2S(aq) ↔ 2H+(aq) + S2-(aq) 8x10-18 5x10-27 4x10-16 8x10-25 9x10-247. What is the value of the equilibrium constant for the following equilibrium? HC=CH NaOH HC=C: Na H₂O pk₂= 25 pka = 157 0Consider the following equation: 2SO2(g)+O2(g)=2SO3(g). At 700 0C, a 500mL reaction vessel contains 1.20*10-3 mol of SO2, 5.0*10-4 mol of O2 and 1.0*10-4 mol of SO3. (a) If Kc is 1.7*106 at 700 0C, will the reaction favor the formation of more products or reactants? (b) what are the equlibrium concentrations of the products and reactants?
- What is the equilibrium constant expression for the reaction? CH3COOH + C2H5OH <======> CH3COOC2H5 + H2OWrite the equilibrium-constant expressions and obtain numerical values for each constant in (c) the acidic dissociation of methyl ammonium hydrochloride, CH3NH3Cl. (d) the basic dissociation of NaNO2. (e) the dissociation of H3AsO3 to H3O+ and AsO33-The Ksp of Cu3 (PO4), is 1.00 × 10-37. Estimate the solubility of this salt in units of g. L-1. You must show any reaction equation(s) that you may think are necessary. If a sample of solid Cu3 (PO4)2 is stirred into exactly one litre of a 0.550M solution of K3PO4 , how will the solubility of the salt compare with the answer that you have obtained in question 2.1? Explain you answer in a short sentence.