/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q38P 23-38. What is the optimal flow ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 23: Q38P (page 631)

23-38. What is the optimal flow rate in Figure 23-17 for best separation of solutes?

Short Answer

Expert verified

The solution is ,

The best flow rate in Figure 23-17 is 33mLminsince the plate height is H=3mm, which is the lowest height in this situation.

Step by step solution

01

of 3

In this task, we'll figure out how to get the best separation of solutes by determining the appropriate flow rate in Figure 23-17.

02

of 3

- Because plate height is inversely proportional to the number of plates N, it is argued that at optimum linear velocity, the plate heightH is the lowest.

Resolution=N4(a-1)aK21+K2

- role="math" localid="1654838426285" Nis proportional to resolution. Hand Nare inversely proportional (lower H= larger N).

The resolution is proportional to N(the larger the N, the higher the resolution).

03

of 3

- As a result, we can claim that the best flow rate in Figure 23-17 is 33mLminsince the plate height isH=3 mm, which is the lowest height in this situation.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Consider the extraction of Mntfrom aqueous solution into organic solution by reaction with protonated ligand HL : D=Mn+(aq)+nHL(org)鈻�MLn(org)+nH+(aq)Kextraction=[MLn]org[H+]aqn[Mn+]aq[HL]orgn.Rewrite Equation 23 - 13 in terms of role="math" localid="1654863844402" Kextractionand express Kextractionin terms of the constants in Equation 23 - 13 . Give a physical reason why each constant increases or decreases Kextraction

In chromatography, resolution is governed by (a) the number of plates, (b) relative retention, and (c) retention factor. Construct a set of graphs to show the dependence of resolution on each of these three parameters. Comment on the nature of the dependence of resolution on each of these three parameters.

Consider a chromatography experiment in which two components with retention factors k1=4.00and k2=5.00are injected into column with N=1.00脳103theoretical plates. The retention time for the less-retained component is tr1=10.0min.

(a)Calculate tmandt12.Find w12(width at half height) and w (at the base) for each peak.

(b)Using graph paper , sketch the chromatogram analogous to figure 23-7,supposing that two peaks have same amplitude(height). Draw the half widths accurately.

(c)Calculate the resolution of the two peaks and compare this value with those drawn in Figure 23-10.

The theoretical limit for extracting solute Sfrom Phase1(volumeV1)into phase2 (volumeV2)is attained by dividing V2into an infinite number of infinitesimally small portions and conducting an infinite number of extractions. With a partition coefficient, K=[S]2/[S]1the limiting fraction of solute remaining in phase 1is2qlimit=e-(V2/V1)K(V1=V2=50mLandK=2). Let volume V2be divided intoequal portions to conduct extractions. Find the fraction of S extracted into phase 2 for n = 1,2, and 10extractions. How many portions are required to attain 95%of the theoretical limit?

If you wish to extract aqueous acetic acid into hexane, is it more effective to adjust the aqueous phase to or ?
See all solutions

Recommended explanations on Chemistry Textbooks

The Earths Atmosphere

Read Explanation

Physical Chemistry

Read Explanation

Nuclear Chemistry

Read Explanation

Inorganic Chemistry

Read Explanation

Kinetics

Read Explanation

Chemical Analysis

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.