In pairs; Let’s say you add 10.0 g PbCl2 (s) to 1.0 L of water. Even...
-
In pairs; Let’s say you add 10.0 g PbCl2 (s) to 1.0 L of water. Even though PbCl2 is ‘insoluble’, a fraction of the solid will dissolve.
-
Write out the chemical equilibrium for the dissolution of PbCl2 in water.
-
The Ksp for PbCl2 is 1.7 x 10-4. Calculate how many grams of PbCl2 will dissolve in the solution.
-
Your lab partner claims that by adding NaCl to the solution, thus increasing [Cl-] and forcing the equilibrium back toward PbCl2 (s), they can precipitate out ALL of the PbCl2 (s) that dissolved. You disagree, claiming that some Pb2+ will always remain in solution, no matter how much NaCl is added. Who is correct? Why?
-
Homework Answers
Add Answer to:
In pairs; Let’s say you add 10.0 g PbCl2 (s) to 1.0 L of
water. Even...
Consider the dissolution equation of lead(II) chloride. PbCl2 (s) Pb2+ (aq) + 2 C1- (aq) Suppose...
Consider the dissolution equation of lead(II) chloride. PbCl2 (s) Pb2+ (aq) + 2 C1- (aq) Suppose you add 0.2331 g of PbCl2(s) to 50.0 mL of water. In the resulting saturated solution, you find that the concentration of Pb2+ (aq) is 0.0159 M and the concentration of Cl - (aq) is 0.0318 M. What is the value of the equilibrium constant, Ksp, for the dissolution of PbCl2? Answer:
#5 Write the solubility product expression for PbCl2. Using the concentration for the Pb+2 and Cl-...
#5 Write the solubility product expression for PbCl2.
Using the concentration for the Pb+2 and Cl- ions, solve for your
experimental Ksp.
#6 Using your book, find the theoretical Ksp for PbCl2
to determine your percent error
A Solubility Product Constant Introduction: Many substances are very soluble in water. However, in this experiment you will be concerned with substances that are insoluble or only slightly soluble. Dynamic equilibrium is established when an excess of a slightly soluble substance is placed...
Question 7 0.77 pts Title q7a7 Which of the following pairs of species, when mixed together in water in proper ratios,...
Question 7 0.77 pts Title q7a7 Which of the following pairs of species, when mixed together in water in proper ratios, would provide a buffer solution? Think each pair through very carefully in terms what species will form when they dissolve in water, and how they can then (potentially) react with water Refer to the table of strong acids/bases on the exam information sheet if you don't have them memorized yet. () KOH and NH4CI (ii)HCI and NH4CI (liI) NH3...
yes, which the data for the experiment is given in the pictures Problem #1 Use this...
yes, which the data for the experiment is given in the
pictures
Problem #1 Use this data to calculate Ksp of Ca(OH)2. The Ca(OH) used was 15.0 ml, titrated with 0.05M HCI DATA TABLE: TITRATION OF THE SUPERNATANT LIQUID Trial 1 Trial 2 Data Volume of CaOH, solution, mL (supernatant liquid) Initial buret reading, mL Final buret reading, mL Volume of HCl required for titration, mL Equivalence point (mL) Average Kop Problem #2 R PPPPPP LABORATORY REPORT YOU MUST SHOW...
Exercise 2 Separation of a Mixture Based on Acid-Base Properties One purpose of this exercise is...
Exercise 2 Separation of a Mixture Based on Acid-Base Properties One purpose of this exercise is to learn how to use a separatory funnel to extract a single component away from other compounds in solution. To do so, we will apply the principles of solubility and acid-base behavior you’re seeing in class. One of the compounds is neutral in the acid-base sense. It has no ability to either donate or accept a proton from an aqueous solution, and will remain...
help on number 3 here is lab we did EXPERIMENT 19 An Analysis of Commercial Antacids...
help on number 3 here is lab we did
EXPERIMENT 19 An Analysis of Commercial Antacids Rolaids Alka Seltzer OBJECTIVES: Determine the per gram neutralizing ability of a commercial antacio Determine the per gram neutralizing ability of sodium bicarbonate Compare the effectiveness of several antacids. INTRODUCTION: "How do you spell relief two hecimie The parietal cells in the stomach secrete sufficient hydrochloric aci 0.10 M The flow of HCl increases when food enters the stomach and so acid secrete sufficient...
Consider the dissolution equation of lead(II) chloride. PbCl2 (s) Pb2+ (aq) + 2 C1- (aq) Suppose you add 0.2331 g of PbCl2(s) to 50.0 mL of water. In the resulting saturated solution, you find that the concentration of Pb2+ (aq) is 0.0159 M and the concentration of Cl - (aq) is 0.0318 M. What is the value of the equilibrium constant, Ksp, for the dissolution of PbCl2? Answer:
#5 Write the solubility product expression for PbCl2.
Using the concentration for the Pb+2 and Cl- ions, solve for your
experimental Ksp.
#6 Using your book, find the theoretical Ksp for PbCl2
to determine your percent error
A Solubility Product Constant Introduction: Many substances are very soluble in water. However, in this experiment you will be concerned with substances that are insoluble or only slightly soluble. Dynamic equilibrium is established when an excess of a slightly soluble substance is placed...
Question 7 0.77 pts Title q7a7 Which of the following pairs of species, when mixed together in water in proper ratios, would provide a buffer solution? Think each pair through very carefully in terms what species will form when they dissolve in water, and how they can then (potentially) react with water Refer to the table of strong acids/bases on the exam information sheet if you don't have them memorized yet. () KOH and NH4CI (ii)HCI and NH4CI (liI) NH3...
yes, which the data for the experiment is given in the
pictures
Problem #1 Use this data to calculate Ksp of Ca(OH)2. The Ca(OH) used was 15.0 ml, titrated with 0.05M HCI DATA TABLE: TITRATION OF THE SUPERNATANT LIQUID Trial 1 Trial 2 Data Volume of CaOH, solution, mL (supernatant liquid) Initial buret reading, mL Final buret reading, mL Volume of HCl required for titration, mL Equivalence point (mL) Average Kop Problem #2 R PPPPPP LABORATORY REPORT YOU MUST SHOW...
help on number 3 here is lab we did
EXPERIMENT 19 An Analysis of Commercial Antacids Rolaids Alka Seltzer OBJECTIVES: Determine the per gram neutralizing ability of a commercial antacio Determine the per gram neutralizing ability of sodium bicarbonate Compare the effectiveness of several antacids. INTRODUCTION: "How do you spell relief two hecimie The parietal cells in the stomach secrete sufficient hydrochloric aci 0.10 M The flow of HCl increases when food enters the stomach and so acid secrete sufficient...
Most questions answered within 3 hours.
-
10.________ is the proportion of variance in the dependent
variable that is accounted for by the...
asked 1 minute ago -
Find at least three implicit modelling assumptions or other
qualitative factors which are relevant but not...
asked 2 minutes ago -
Write a method that determines the key of the successor of the
root node in a...
asked 16 minutes ago -
Determine the lattice energy (in kJ/mol) of NaF(s),
using the data provided.
Energy to sublime Na(s)...
asked 24 minutes ago -
How do you explain the deviations from Hardy-Weinberg
equilibrium in a population where smoking has effected...
asked 34 minutes ago -
As a general rule, testing should be conducted until all bugs
have been detected.
A. True....
asked 37 minutes ago -
Just before a referendum on a school budget, a local newspaper
polls
436
voters to predict...
asked 39 minutes ago -
3) Consider the combustion reaction for octane (C8H18), which is
a primary component of gasoline.
2C8H18+25O2⟶16CO2+18H2O...
asked 43 minutes ago -
A protein molecule in an electrophoresis gel has a negative
charge. The exact charge depends on...
asked 42 minutes ago -
we have seen the development of e-commerce in the last 20 years
, what do you...
asked 58 minutes ago -
Two blocks are sliding toward one another along a level
horizontal surface. One block is moving...
asked 1 hour ago -
Oklahoma Corp. uses the indirect method to prepare its statement
of cash flows. Refer to the...
asked 1 hour ago