Identify the correct statements. A. Glucose exists in two anomeric forms. B. Anomers of glucose differ in configuration at C-1 in cyclic hemiacetal structure. C. Melting point of -anomer of glucose is greater than -anomer. D. Specific rotation of -anomer is +19° while for -anomer is +112° E. and -anomers of glucose are prepared by crystallization of saturated glucose solution at 303 K and 371 K respectively. Choose the correct answer from the options given below:
D. A, B and E Only
Statement A is correct because glucose exists in two anomeric forms, -D-glucose and -D-glucose. Statement B is correct because the two anomers differ only in the configuration of the hydroxyl group at C-1, which is the anomeric carbon in the cyclic hemiacetal structure. Statement C is incorrect because the melting point of the -anomer is 419 K, which is less than the melting point of the -anomer (423 K). Statement D is incorrect because the specific rotation of the -anomer is +112^ and that of the -anomer is +19^ . Statement E is correct because the -form is obtained by crystallization from a concentrated solution of glucose at 303 K, while the -form is obtained by crystallization from a hot and saturated aqueous solution at 371 K. Thus, statements A, B, and E are correct. Answer: A, B and E Only
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