State what adjustment should be made to the mobile phase

Assignment Help Chemistry
Reference no: EM13171183

On a C18 bonded phase column, a compound moves slowly in a MeOH/ACN (50/50) mobile phase. what adjustment should be made to the mobile phase to bring the compound off sooner? why?

Reference no: EM13171183

Questions Cloud

What is the mass of the potassium hydrogen carbonate : A student is required to generate 90.0 mL of carbon dioxide at 750 mm Hg and 21C using potassium hydrogen carbonate and HCl. What is the mass of the potassium hydrogen carbonate needed?
What are some of the general properties ceramics and polymer : What are some of the general properties that distinguish metals from ceramics and polymers?
What was the growth rate in sims earnings per share : Sims Inc. earned $1.00 per share in 2000. Five years later, in 2005, it earned $2.00. What was the growth rate in Sims' earnings per share (EPS) over the 5-year period?
How to identify which compound is in the unknown : Specificy which ion you would add to the unkown and how the results would identify which compound is in the unknown.
State what adjustment should be made to the mobile phase : what adjustment should be made to the mobile phase to bring the compound off sooner? why?
Compute the molarities of hc2h3o2 : Calculate the molarities of HC2H3O2 and NaC2H3O2 in the buffer solution you will prepare in this experiment. The buffer solution consists of 50mL and 0.20M of NaC2H3O2 and consists of 10mL and 1.0M of HC2H3O2
What is the po43- concentration of the stock solution : A stock solution is prepared by adding 22 mL of 1 M Na3PO4 to enough water to make 73 mL. What is the PO43- concentration of 30 mL of the stock solution?
What cell potential would be expected under conditions : What cell potential (V) would be expected under the following conditions?
How many moles of cn- ions will be contained : A 265 mL stock solution contains 2.3 M Ca(CN)2. When 105 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution?

Reviews

Write a Review

Chemistry Questions & Answers

  Steps in the mechanism for the following reaction

Show all the steps in the mechanism for the following reaction, When benzene is mixed with deuterated sulfuric acid, deuterium is slowly incorporated onto the ring. Show the mechanism for this reaction and explain how this relates the sulfonation of ..

  Prior to placing piece of metal into the graduated cylinder

This assignment inhibits chemistry Laboratory Questions.

  Write the structures of the saytzeff elimination

Write the structures of the saytzeff elimination

  Calculate ph - chemistry questions

Chemistry Questions on Calculate P H

  How many mols of hydrogen can produce

how many mols of H 2 can produce

  Analysis of corrosion mechanisms

Analysis of corrosion mechanisms and preventative measures

  Chemical and pharmaceutical science

Write an equation for the formation of an acetal from reaction of excess methanol with benzaldehyde in the presence of an acid catalyst.

  Calculate the approximate sulphur

Calculate the approximate SO 2 mass emission in lb/day.

  What is the structure - stereochemistry

What is the structure (including functional groups)? Stereochemistry (racemic or single enantiomer)?

  Design a qualitative analysis scheme

Design a qualitative analysis scheme

  What will be the resultant pressure

What will be the resultant pressure when the stopcock is opened?

  The 1h nmr spectrum

Integrals for some of the resonances in the 1H NMR spectrum are higher than they should be due to the shear number of hydrogens in this compound

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