Explain what is the diluted fe3+ concentration

Assignment Help Chemistry
Reference no: EM13689977

Problem- 4.75 mL of H2O and 2.50 mL of an aqueous 0.010 M SCN- solution were added to 11.25 mL of an aqueous 0.015 M Fe3+ solution. The total volume of the solution is 18.50 mL.

1) What is the diluted Fe3+ concentration?

A standard reference FeSCN2+ solution (0.040 M) has an absorbance = 1.025.

2) What is the concentration of an unkown FeSCN2+ solution that has an absorbance = 0.431.

Explain each and every step in detail. I need proficient help in the above problems.

Reference no: EM13689977

Questions Cloud

Calculate the change in ph when 4.00 ml of 0.100 m hcl : Problem- 1) Calculate the change in pH when 4.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
A stock solution is prepared by adding albr3 : Problem- A stock solution is prepared by adding 20mL of 0.2M AlBr3 to enough water to make 65mL. How many moles of Br� are in 45mL of the stock solution?
Gas is synthesized by combining hyrdogen and nitrogen : Problem- Ammonia gas is synthesized by combining hyrdogen and nitrogen. If you want to produce 562g of NH3, what volume of H2 gas at 56 degree Celsius and 745 mmHg is required? (r=0.08206 L(atm)/ mol(K), also assume the reaction is not an equilibr..
Define the concentrations shown are after mixing : Problem- Which of the combinations below will produce some precipitate (even if only a very small amount)? The concentrations shown are after mixing, but before reaction.
Explain what is the diluted fe3+ concentration : Problem- 4.75 mL of H2O and 2.50 mL of an aqueous 0.010 M SCN- solution were added to 11.25 mL of an aqueous 0.015 M Fe3+ solution. The total volume of the solution is 18.50 mL.
What is the ph of the resulting buffer : Problem- 500.0 mL of 0.170 M NaOH is added to 555 mL of 0.250 M weak acid (Ka = 5.86 Ã- 10-5). 1) What is the pH of the resulting buffer
What are the ranges of [h+] and [oh-] in the raindrops : Problem- Carbon dioxide in the atmosphere dissolves in raindrops to produce carbonic acid (H2CO3), causing the pH of clean, unpolluted rain to range from about 5.2 to 5.6. 1) What are the ranges of [H+] and [OH-] in the raindrops
Calculate the enthalpy of formation of 1 mol of mgo : Problem- A 1.00 sample of solid magnesium was burned in oxygen to give a 1.658 g sample of pure MgO. The heat given off in this reaction was 24.76 kJ. Given this information, calculate the enthalpy of formation of 1 mol of MgO.
Explain what volume does the resulting gas : Problem- When 0.25L of liquid nitrogen (d = 0.807 g/mL) is vaporized what volume does the resulting gas occupy at 25 degrees C and 5.00 atm

Reviews

Write a Review

Chemistry Questions & Answers

  If you have 2000 g of radioisotope with a half-life of 5

if you have 200.0 g of radioisotope with a half-life of 5 days. how much isotope would remain after 15

  Compute the expected ph values of the buffer systems

Calculate the expected pH values of the buffer systems from the experiments (a, b, c, d) using the Henderson-Hasselbalch equation (pH= pKa + log [A-] ). Use for pKa values: carbonic acid= 6.37 and acetic acid= 4.75.

  If 500g of potassium chlorate solid decomposes and

if 500g of potassium chlorate solid decomposes and produces 303g of potassium chloride solid how many grams of oxygen

  Compute the volume of co formed at a pressure

ignited with a sample of oxygen gas having a volume of 35.0 liters at 31oC and 1.25 atm to produce CO2 and H2O vapor. Calculate the volume of CO2 formed at a pressure of 2.50 atm and a temperature of 125oC.

  When two grams of sodium hydroxide were dissolved in 149

when two grams of sodium hydroxide were dissolved in 149 grams of h2owater in a calorimeter at twenty four degree

  Explain what is the ph of the solution

A solution of sodium acetate salt is .026 M at the equivalence point of the reaction, what is the pH of the solution

  Define equilibrium the total pressure in the container

A 0.831-g sample of SO3 is placed in a 1.00 L container and heated to 1100 K. The SO3 decomposes to SO2 and O2: 2SO3 (g) 2SO2 (g) + O2 (g). At equilibrium the total pressure in the container is 1.300 atm.

  What is the molarity of the hcl

If 30.00 mL of 0.500 M KOH are needed to neutralize 10.00 mL of HCl of unkown concentration, what is the molarity of the HCl

  What are the steps the manager would follow

0.032 moles of balls, what are the steps the manager would follow to determine how many balls there are and calculate the final total.

  Explain three solutions have the same freezing point

0.10 grams 1, 3, 5-trichlorobenzene, 0.10 grams 2- chloronaphthalene as well as 0.10 grams biphenyl, dissolved individually in three 100ml samples of benzene.

  Explain what weight of sodium acetate trihydrate

What volume of glacial acetic acid (18 M) and what weight of sodium acetate trihydrate (CH3COONa•3H2O) are required to make 100 mL of 0.2 M buffer at pH 4.50 (pKa of acetic acid is 4.74)

  How many moles of barium nitrate must be added

How many moles of Barium nitrate must be added to 325mL of 0.20M Iron (III) nitrate to increase the concentration of nitrate ions in the solution to 1.25M.

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