Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Chemistry Expert

Specific rotation of α and β -D-glucose.

A freshly prepared solution of α-D-glucose shows a specific rotation of +112∘. Over time, the rotation of this solution decreases and reaches an equilibrium value of +52.5∘. In contrast, a freshly prepared solution of β-D-glucose has a specific rotation of +19∘. The rotation of this solution increases over time to the same equilibrium value of +52.5∘.

(a) Why do specific rotations of the freshly prepared samples change over time, and why do they reach the same equilibrium value?

(b) Compute the percentage of each anomer at equilibrium.

Chemistry, Academics

  • Category:- Chemistry
  • Reference No.:- M919292

Have any Question? 


Related Questions in Chemistry

A sample has a specific heat of 0155 calgmiddotdegc how

A sample has a specific heat of 0.155 cal/g·°C. How much energy will be required to raise the temperature of the sample from 20.0°C to 35.0°C if the sample has a mass of 8.0 g?

Question 1di-lithium is composed of two lithium atoms which

Question 1 Di-lithium is composed of two lithium atoms. Which of the following statements regarding di-lithium or lithium is FALSE? They oxidize very slowly in air. They remain in the solid state even after getting fragm ...

At a particular location in a countercurrent stripper for

At a particular location in a countercurrent stripper for the removal of solute A from a liquid stream, the mole fraction of the transferring species A in the bulk gas phase is 0.01, and the mole fraction of solute A in ...

A 187 g sample of mg reacts with 800 ml of a hydrochloric

A 1.87 g sample of Mg reacts with 80.0 mL of a hydrochloric acid solution (pH = -0.544). What is the pH of the solution after all the Mg has reacted? Assume constant volume.

What is the sum of all coefficients when the following net

What is the sum of all coefficients when the following net ionic equation is balanced using the smallest whole number coefficients possible? Do not forget coefficients of one. MnO 4 - + Mn 2+ MnO 2

Write the balanced equation for the reaction of calcium

Write the balanced equation for the reaction of calcium metal with iron (III) nitrate. The coefficients on calcium metal and iron metal in the balanced equation are: 3 Ca(s) and 2 Fe(s) 2 Ca(s) and 3 Fe(s) 6 Ca(s) and 6 ...

1 when h2 gas was released by the reaction of hcl with zn

1. When H2 gas was released by the reaction of HCl with Zn, the volume of H2 collected was 66.0 mL at 26 °C and 750 mmHg . A. What is the volume of the H2 at 0 °C and 1.00 atm pressure (STP)? 2. Express the temperature n ...

Write the balanced equation then outline the steps

Write the balanced equation, then outline the steps necessary to determine the information requested in each of the following a) the number of moles and the mass of Mg required to react with 5.00 g of HCl and produce MgC ...

Question 1in contrast to going without food the human body

Question 1 In contrast to going without food, the human body can survive only about __________ days without water. A. 3 B. 7 C. 11 D. 15 Question 2 Which of the following sources of water is most likely to contain contam ...

The plate height in a particularly packed gas

The plate height in a particularly packed gas chromatography column is characterized by the van Deemter equation with parameters: A= 1.50 mm, B= 25.0 mm ml/min, and C = 0.0250 mm min/mL. a) Please use spreadsheet to cons ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro