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

  Define the activation energy for the reaction energy

Using the following information to determine the activation energy for the reaction energy for the reaction shown here

  A 251 ml sample of oxygen is collected over water at 25 deg

a 251 ml sample of oxygen is collected over water at 25 deg c and 760 torr pressure. if the vapor pressure of water as

  Explain the methylamine hydrochloride dissociates in water

The methylamine hydrochloride dissociates completely in water to form methylammonium ion (CH3NH3+) and chloride ion.

  Find out the initial temperature of the balloon

How hot will a 2.3 L balloon have to get to expand to a volume of 400 L? Assume that the initial temperature of the balloon is 25 degrees Celcius.

  Explain diluted solution is then placed in a spray bottle

The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted spray

  State the nubmer of stereocenters in the molecule

The maximum # of stereoisomers that are possible for a given molecule can be determined from the formula, 2^n, where n is the nubmer of stereocenters in the molecule.

  Define the enthalpy change delta h for a reaction

At a constant pressure of 1.50 atm what is the enthalpy change delta H for a reaction where the internal eneergy change delta E is 58.0 kJ

  State a nuclear equation to describe the spontaneous fission

Write a nuclear equation to describe the spontaneous fission of 244 Am 95 to form I-134 and Mo-107. Determine how many netrons are produced in the reaction

  Explain the organic layer after complete treatment with naoh

If you have an organic layer that contains an organic acid, an organic base, and a nautral organic compound, what is in the organic layer after complete treatment with NaOH(aq), followed by complete treatment with HCl(aq)

  The ratio of carbon hydrogen and oxygen atoms in a molecule

the ratio of carbon hydrogen and oxygen atoms in a molecule is 461. what is the molecular formula of the compound if

  Define tris is widely used in a biochemical laboratory

Tris is widely used in a biochemical laboratory. Its acid dissociation constant is 8.32 x 10^-9. You have available at your lab bench a 0.1 M solution of Tris in its protonated form, 0.1 M solution of HCL and NaOH,

  Explain why is reasonable on one account however opposite

The boiling point of HCl is -84C and that of HBr is -70C. Why is this reasonable on one account however opposite from what one would expect from a consideration of polarity? Explain which trend is more important in this case

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