Explain highly humid room result in different rf values

Assignment Help Chemistry
Reference no: EM13502123

Suggest a reason that TLC plates that are stored in a highly humid room result in different Rf values than plates that are stored in a dehumidified enviorment. Hint: Consider the structure of the layered material on the TLC plates and how that material might interact with water molecules in the air.

Reference no: EM13502123

Questions Cloud

What are the equivalent units for conversion costs : What are the equivalent units for conversion costs for the month in the first processing department?
Define the difference in concentration must be sustained : The difference in concentration must be sustained by coupling to reactions that have at least that difference of Gibbs energy
What was the cost of goods sold for the year : Sanker Inc. has provided the following data for the month of August. There were no beginning inventories; consequently, the direct materials, direct labor, and manufacturing overhead applied listed below are all for the current month.
Find the minimum frequency a photon must have : Find the minimum frequency a photon must have if it is to ionize the n = 1 state of a doubly ionized lithium atom
Explain highly humid room result in different rf values : Suggest a reason that TLC plates that are stored in a highly humid room result in different Rf values than plates that are stored in a dehumidified enviorment.
What is the kinetic energy of this rotation : Two point masses m1 = 2 kg and m2 = 1 kg are connected by a thin massless rod of length L = 2 m, What is the kinetic energy of this rotation
What is the velocity of the log : a 55 kg person is at rest at the left end of a floating 180kg log. It starts to run toward the other end with a velocity 2.2m/s relative to the still water. what is the velocity of the log
Explain what volume of .006 m hno3 is required to neutralize : Solubility of Mg(OH)2 in water is 9.0z10^-4 g/100mL. What volume of .006 M HNO3 is required to neutralize1.0L of saturated Mg(OH)2 solution
Explain how product you have selected fits in the ais cycles : Could small business benefit from the "extra" features found in the non MYOB products and explain how the product you have selected "fits" in the AIS cycles.

Reviews

Write a Review

Chemistry Questions & Answers

  State the following compounds have eclipsing hydrogens

Which of the following compounds have eclipsing hydrogens? If so do all the hydrogens eclipse each other? Are there any other eclipsing atoms?

  How many times faster will the reaction occur at 43circ rm

how many times faster will the reaction occur at 43circ rm c than at 0 circ rm c? how many times faster will the

  Explain if one mole of iso-octane is burned

Assume that the products are carbon dioxide and water. Answer the following question: If ONE mole of iso-octane is burned, how many mols of water are formed

  Explain how many moles of sodium bromide can be produced

How many moles of sodium bromide can be produced from the reaction of 1.03 moles of sodium with 0.650 moles of bromine gas? 2 Na(s) + Br2(g) > 2 NaBr(s)

  A reaction has a rate constant and how long will it take

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

  Why does the tetrahedral intermediate for carbxylic acid

Why does the tetrahedral intermediate for carbxylic acid derivatives decompose into a carbonyl species

  State iron metal is coated wih nickel

Iron metal is coated wih nickel. Which of metals will undergo corrosion when coating is damaged? Give the scheme of electrochemical corrosion and write equations for the reactions

  How many grams of pbi2 should form

A 99.8mL sample of a solution that is 12.0% KI by mass(d=1.093g/mL) is added to 96.7mL of another solution that 14.0%Pb(NO3)2 by mass (d=1.134g/mL). How many grams of PbI2 should form.

  Define what is the concentration of urea

The decomposition of urea in 0.1 M HCl is first order in urea and first order overall. When [urea] = 0.200 M , the rate at 61.0 °C is 8.56 x 10-5 M/s. What is the concentration of urea in this solution after 4751 s if the starting concentration is 0..

  Dissolved sucrose incrases its boiling point temperature

You have 100 moles of solvent (not water). You have determined that 100g of dissolved sucrose incrases its boiling point temperature by 10C. For 100 moles of the pure solvent, how much mass (in grams) of salt

  The food metabolism is reaction of oxaloacetate with acetyl

The first step in the citric acid cycle of food metabolism is reaction of oxaloacetate with acetyl CoA to give citrate. Propose a mechanism, using acid or base catalysis as needed.

  Explain the enthalpy of combustion of benzoic acid

The enthalpy of combustion of benzoic acid (C6H5COOH) is commonly used as the standard for calibrating constant-volume bomb calorimeters; its value has been accurately determined to be 3226.7 kj

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