A solution contains 10-3 M (NH4)2CO3 plus 10-3 M CaCO3. (NH4+: pKa 9.26)a) Follow the four steps and list the species and equations that would have to be solvedto determine the equilibrium solution composition. (15 pts)b) Prepare a log C-pH diagram for the solution. Use a full sheet of graph paper, andshow the ranges 1≤ pH < 13 and -10≤ log C≤ -1. (10 pts)c) Use the graphical approach for the solution pH. What is the concentration of allspecies? (15 pts)

Determining the Concentration of All Species:Based on the solution containing 10−3 M (NH4)2CO3 and…

Answered: A solution contains 10-3 M (NH4)2CO3…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 9RQ: What is an acidbase indicator? Define the equivalence (stoichiometric) point and the end point of a...

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A diprotic acid, H2B(MM=126g/moL), is determined to be a hydrate, H2B xH2O. A 10.00-g sample of this hydrate is dissolved in enough water to make 150.0 mL of solution. Twenty-five milliliters of this solution requires 48.5 mL of 0.425 M NaOH to reach the equivalence point. What is x?
Calculate the pH after mixing 15 mL of 0.12 M acetic acid with 15 ml of 0.12 M NaOH. What are the major species in solution at equilibrium (besides water), and what are their concentrations?
Metacresol purple is an indicator that changes from yellow to purple at pH 8.2. (a) What is Ka for this indicator? (b) What is its pH range? (c) What is the color of a solution with pH 9.0 and a few drops of metacresol purple?
Write the Lewis structures of the reactants and product of each of the following equations, and identify the Lewis acid and the Lewis base in each: (a) CS2+SHHCS3 (b) BF3+FBF4 (c) I+SnI2SnI3 (d) Al(OH)3+OHAl(OH)4 (e) F+SO3SFO3
. How is the strength of an acid related to the fact that a competition for protons exists in aqueous solution between water molecules and the anion of the acid?
A friend asks the following: Consider a buffered solution made up of the weak acid HA and its salt NaA. If a strong base like NaOH is added, the HA reacts with the OH to form A. Thus the amount of acid (HA) is decreased, and the amount of base (A) is increased. Analogously, adding HCI to the buffered solution forms more of the acid (HA) by reacting with the base (A). Thus how can we claim that a buffered solution resists changes in the pH of the solution? How would you explain buffering to this friend?
Sketch a titration curve for the titration of potassium hydroxide with HCl, both 0.100 M. Identify three regions in which a particular chemical species or system dominates the acid-base equilibria.
Each symbol in the box below represents a mole of a component in one liter of a buffer solution; represents the anion (X-), = the weak acid (HX), = H+, and =OH. Water molecules and the few H+ and OH- ions from the dissociation of HX and X- are not shown. The box contains 10 mol of a weak acid, , in a liter of solution. Show what happens upon (a) the addition of 2 mol of OH- (2 ). (b) the addition of 5 mol of OH- (5 ). (c) the addition of 10 mol of OH- (10 ). (d) the addition of 12 mol of OH- (12 ). Which addition (a)-(d) represents neutralization halfway to the equivalence point?
A solution has a pH of 4.5. What would be the color of the solution if each of the following indicators were added? (See Fig. 14-8.) a. methyl orange b. alizarin c. bromcresol green d. phenolphthalein
please answer on 1-a,b,c,d. Clear handwriting or type in, thank you! 1. The mixture of anions is an effective blood buffer with the following acid-base equilibrium: HO" (aq) + HPO* (aq) H:POs (aq) + H;O (1) a. For the equilibrium above, what is the effect of decreasing the pH? (give shift) b. As a result of the shift, which ion H:PO, or HPO, would appear to increase? c. For the equilibrium above, what is the effect of increasing the pH? (give shift) d. As a result of the shifl, which ion H:PO, or HPO would appear to increase?
(a) Calculate the percent ionization of 0.00850 M hydrocyanic acid (Ka = 4.9e-10).% ionization = __________ %(b) Calculate the percent ionization of 0.00850 M hydrocyanic acid in a solution containing 0.0740 M sodium cyanide.% ionization = ___________ %
7:50 A14 (4th quarter) pH and po... 3.24 x 10-3 1.09 x 10-10 M 4.325 1 x 10-4 M Part B. 1. The hydrogen ion concentration in a solution is measured to be 7.84 X 10-5 M. Calculate the following: a) pH b) pOH c) [OH-], M 2. You have 500.0 mL (convert to liter by dividing by 1,000) of a 4.5 x 10-¹¹M of HNO₂ solution. a. How many grams of HNO3 are present in this solution? Step 1: Using the formula of molarity, solve for the moles of solute: Moles solute = M x L Step 2: Solve the MM of HNO3 using the periodic table of elements: Step 3: Multiply Steps 1 and 2 results to get the grams of HNO3. b. Complete the chart using the given value of the concentration of [H*]. [OH-] [H+] 4.5 x 10-¹¹M pH POH 11.76

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