The percentage of α -D-galactose and β -D-galactose at equilibrium is to be calculated. Concept Introduction: The chiral compound shows the property of specific rotation. Specific rotation is intensive property. The slow change in optical rotation to an equilibrium value is called mutarotation Equation for calculating the percentage , ( Specific rotation at equlibrium ) = ( fraction of ( α − D − galactose ) equlibrium × Specific rotation of ( α − D − galactose ) ) + ( fraction of ( β − D − galactose ) equlibrium × Specific rotation of ( β − D − galactose ) )

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Part 1. Aqueous 0.010M AgNO 3 is slowly added to a 50-ml solution containing both carbonate [co32-] = 0.105 M and sulfate [soy] = 0.164 M anions. Given the ksp of Ag2CO3 and Ag₂ soy below. Answer the ff: Ag₂ CO3 = 2 Ag+ caq) + co} (aq) ksp = 8.10 × 10-12 Ag₂SO4 = 2Ag+(aq) + soy² (aq) ksp = 1.20 × 10-5 a) which salt will precipitate first? (b) What % of the first anion precipitated will remain in the solution. by the time the second anion starts to precipitate? (c) What is the effect of low pH (more acidic) condition on the separate of the carbonate and sulfate anions via silver precipitation? What is the effect of high pH (more basic)? Provide appropriate explanation per answer

Answer 1

Question

Chapter 20, Problem 66P

Interpretation Introduction

Interpretation:

The percentage of α-D-galactose and β-D-galactose at equilibrium is to be calculated.

Concept Introduction:

The chiral compound shows the property of specific rotation. Specific rotation is intensive property.

The slow change in optical rotation to an equilibrium value is called mutarotation

Equation for calculating the percentage ,

(Specific rotation at equlibrium)=(fraction of (α−D−galactose)equlibrium×Specific rotation of (α−D−galactose))+(fraction of (β−D−galactose)equlibrium×Specific rotation of (β−D−galactose))

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