The name and structures of seven isomeric alkynes with molecular formula C 6 H 10 are to be given. Concept introduction: The longest carbon chain which contains the carbon-carbon triple bond is chosen. The chain is numbered from the end that gives the lowest number to the carbon in triple bond. Compounds with more than one triple bond are called diynes, triynes and so forth. Compounds containing both double bond and triple bonds are called as enynes. The chain is numbered from the end nearer to the first of the multiple bonds, double or triple. When there is a choice in numbering the double bond is given preference and the lowest number is given to it. To give: The name and structures of seven isomeric alkynes with molecular formula C 6 H 10 .

Question

(c) The following data have been obtained for the hydrolysis of sucrose, C12H22O11, to glucose, C6H12O6, and fructose C6H12O6, in acidic solution: C12H22O11 + H2O → C6H12O6 + C6H12O6 [sucrose]/mol dm³ t/min 0 0.316 14 0.300 39 0.274 60 0.256 80 0.238 110 0.211 (i) Graphically prove the order of the reaction and determine the rate constant of the reaction. (ii) Determine the half-life, t½ for the hydrolysis of sucrose.

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Question

Chapter 9.1, Problem 2P

Interpretation Introduction

Interpretation:

The name and structures of seven isomeric alkynes with molecular formula C₆H₁₀ are to be given.

Concept introduction:

The longest carbon chain which contains the carbon-carbon triple bond is chosen. The chain is numbered from the end that gives the lowest number to the carbon in triple bond. Compounds with more than one triple bond are called diynes, triynes and so forth. Compounds containing both double bond and triple bonds are called as enynes. The chain is numbered from the end nearer to the first of the multiple bonds, double or triple. When there is a choice in numbering the double bond is given preference and the lowest number is given to it.

To give:

The name and structures of seven isomeric alkynes with molecular formula C₆H₁₀.

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(c) The following data have been obtained for the hydrolysis of sucrose, C12H22O11, to glucose, C6H12O6, and fructose C6H12O6, in acidic solution: C12H22O11 + H2O → C6H12O6 + C6H12O6 [sucrose]/mol dm³ t/min 0 0.316 14 0.300 39 0.274 60 0.256 80 0.238 110 0.211 (i) Graphically prove the order of the reaction and determine the rate constant of the reaction. (ii) Determine the half-life, t½ for the hydrolysis of sucrose.

(III) adsorbent (b) Adsorption of the hexacyanoferrate (III) ion, [Fe(CN)6] ³, on y-Al2O3 from aqueous solution was examined. The adsorption was modelled using a modified Langmuir isotherm, yielding the following values of Kat pH = 6.5: (ii) T/K 10-10 K 280 2.505 295 1.819 310 1.364 325 1.050 Determine the enthalpy of adsorption, AadsHⓇ. If the reported value of entropy of adsorption, Aads Se = 146 J K-1 mol-1 under the above conditions, determine Aads Gº.

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