All naturally occurring sugars are found to have the D-configuration. How does glucose react with hydroxylamine ? Give equation.

All naturally occurring sugars are found to have the D-configuration. Give a reaction to prove that glucose contain five hydroxyl groups.

All naturally occurring sugars are found to have the D-configuration. How do you assign D or L configuration for a monosaccharide ? Illustrate with a specific example.

The pentaacetate of glucose does not react with hydroxylamine indicating the

Most of the naturally occurring processes are spontaneous. a) Give the criteria for spontaneity of a process in terms of free energy change ( DeltaG ) b) Exothermic reactions associated with a decrease in entropy are sponaneous at lower temperatures. Justify on the basis of Gibbs equation. c) Find the temperature above which the reactin MgO_((s))+C_((s))rightarrow Mg_((s))+CO_((g)) becomes spontaneous. (Given ( Delta_rH^theta=490kJmol^-1 & Delta_rS^theta=198JK mol^-1 )

The compound C_4 H_8 Cl_2 (A) an hydrolysis gives a compound C_4 H_8 O_1(B) . The compound (B) reacts with hydroxylamine and gives a negative test with Tollen's reagent. What are (A)and (B), Support your answer with proper reasoning and give the equations of reactions.

Aminoacids, as the name suggests, have both an amino group and a carboxyl group in their structure. In addition, all naturally occurring aminoacids (those which are found in proteins) are called L-aminoacids.From this, can you guess from which compound can the simplest aminoacid be made?

Consider the following statements concerning proteins I. All natural amino acids which are constituents of proteins, are alpha -amino acids. II. alpha -Amino acids are all optically active and have L-configuration. III. alpha -Amino acids are connected by ester linkages. IV. Favourable conformation for the peptide linkages in protein is the alpha -helix arrangement. Of these statements

Pick out the statements which suits to f block elements. a. All of them are naturally occurring elements. b. Uranium and Thorium are f block elements. c. Last electrons is filled in the shell pre-ceding the outermost shell. d. last electrons are filled up in the antepenultimate shell. e. Includes some radioactive elements. f. Some of them are used as catalyst in petroleum industry.

What is crystảl field 'splitting energy? How does the magnitude of 'Delta', decide the actuál configuration of d orbitals in a coordination entity?