Gravimetric analysis of iron ions

Assignment Help Chemistry
Reference no: EM13910661

A student performs the following gravimetric analysis of iron ions in a water system:Fe2+ (aq) + 2CO32- (aq) = FeCO3 (s)If this student used excess carbonate and obtained the following data, what was the original concentration in moles/L) of Fe2+ in the water sample? Total Volume of Solution: 100.00 mLMass of FeCO3 collected: 23.758 grams.Is this how you would solve it change 100 ml to .1 liters. 115.853x = 23.758 x .1 = .02 liters.

Reference no: EM13910661

Questions Cloud

Develop the mo diagram : Develop the MO diagram for LiF. Clearly indicate which atomic orbitals mix to make which molecular orbitals. Show the orbital occupancy in LiF and estimate the bond order.
Bond dissociation energy : The bond dissociation enthalpies for N2 and N2- are 945 kJ/mol and 765 kJ/mol respectively. (There is only a small difference between enthalpies and energies.) Using an argument based on MO theory, explain why N2- has a smaller bond dissociation e..
What is the concentration : What is the concentration of Br- (aq) in a solution prepared by mixing 75.0 mL of 0.62 M iron (III) bromide with 75.0 mL of water? Assume volumes are additive. the answer is 0.93 but I got 1.86 and 3.1 I'm not even sure anymore!
Find mean and the standard deviation of the round-off error : Find the mean and the standard deviation of the round-off error. Find the probability that the round-off error will be within one standard deviation of the mean.
Gravimetric analysis of iron ions : A student performs the following gravimetric analysis of iron ions in a water system:Fe2+ (aq) + 2CO32- (aq) = FeCO3 (s)If this student used excess carbonate and obtained the following data, what was the original concentration in moles/L) of Fe2+ ..
Identify the conjugate acid-base pairs : When lithium oxide (Li2O) is dissolved in water, the solution turns basic from the reaction of the oxide ion (O^2-) with water. Write the equation for this reactionand, identify the conjugate acid-base pairs.
Find probability that his forecast is at most six percent : Find the probability that his/her forecast is At least 3.5 percent,  At most 6 percent and Between 3.5 percent and 6 percent.
The replica designs case : You agreed to analyze her business operations and to advise her how to reach her modest goal of earning $25,000 per year, after taxes. After some calculation and some thought, you conclude that Jane has to increase her revenues, perhaps by achieving ..
Crystalline or amorphous solid : Based on your observations of acetamide when it reformed a solid after melting, does acetamide form a crystalline or amorphous solid? Explain the difference between these two terms as part of your answer.

Reviews

Write a Review

Chemistry Questions & Answers

  Find out the ph during the titration

Calculate the pH during the titration of 100.0 mL of 0.200 M HCl with 0.400 M NaOH. First what is the initial pH (before any NaOH is added)? - What is the pH after 38.4 mL of NaOH are added?

  S-butyllithium in toluene was added to a solution of styren

A 0.16 mol dm-3 solution (3.50 cm3) of s-butyllithium in toluene was added to a solution of styrene (8.40 g) in toluene (200 cm3). After complete conversion of the styrene, isoprene (28.00 g) was added. When the isoprene had completely polymerized, t..

  Explain what is the zn cu concentration ratio

What is the Zn2+: Cu2+ concentration ratio in the following cell 25 degrees if the measured cell potential

  Calculate the number of oxygen molecules

Liquid carbon disulfide burns in oxygen to form carbon dioxide and sulfur dioxide gases. Calculate the number of oxygen molecules it would take to consume 500 molecules of carbon disulfide

  How much heat is released when 105 grams of steam at 1000

how much heat is released when 105 grams of steam at 100.0 degrees celsius is cooled to ice at -15.0 degrees celsius?

  Explain what are the equillibrum pressure of pco

The value of Kc for this reaction is 5.0 at 600 K. What are the equillibrum partial pressures of the three gases if a reaction vassel initially contains a mixture of the reactants in which Pco=Pcl2=0.215 atm and Pcocl2= 0.000 atm?

  How many grams of mgcl2 would be required to prepare

How many grams of MgCl2 would be needed to prepare 2.000 L of a solution that is 197 ppm in Mg2+ ions. Note: there is one Mg2+ ion in every MgCl2.

  Explain what is the ph and the oh- of the solutions

What is the pH and the [OH-] of the solutions with the following [H3O+]? a) 2.3 x10-4 , b) 4.8 x10-8, c) 6.3 x10-2

  State the salt is in first begins to precipitate

A solution is 0.034M in Na2SO4 and 0.035M in Na2CrO4. Solid Pb(NO3)2 is added without changing the volume of the solution.

  Compute the lower heating value of the brookeville seam coal

Calculate the lower heating value of the Brookeville Seam coal with the analysis given below with 10, 20, 30, 40, and 50% moisture contents . Comment on the percentage of the heat loss based on the gross or high heating value of the fuel in using ..

  Explain a reaction has a rate constant it take compound

A reaction has a rate constant of 0.00704 sec-1, how long will it take (in minutes) until 0.212 mol/L of the compound is left, if there was 0.619 mol/L at the start

  Define how the subsequent changes in the procedure

Define how the subsequent changes in the procedure for this experiment would affect the results. A glass beaker was used as an alternative of a pressed polystyrene cup

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd