The hydrolysis of sucrose (C12H22O11) into glucose and fructose in acidic water

Question

The hydrolysis of sucrose (C12H22O11) into glucose and fructose in acidic water has a rate constant of 1.8×104s1 at 25 C.

Part A

Assuming the reaction is first order in sucrose, determine the mass of sucrose that is hydrolyzed when 2.35 L of a 0.180 M sucrose solution is allowed to react for 200 minutes.

The hydrolysis of sucrose (C12H22O11) into glucose and fructose in acidic water has a rate constant of 1.8×104s1 at 25 C.

Part A

Assuming the reaction is first order in sucrose, determine the mass of sucrose that is hydrolyzed when 2.35 L of a 0.180 M sucrose solution is allowed to react for 200 minutes.

Explanation / Answer

First order reaction.

K = 2.303/tlog(a/a-x)

initial No of mol of sucrose taken = 0.423 mol

1.8*10^(-4) = (2.303/(200*60))log(0.423/(0.423-x))

No of mol of sucrose hydrolysed = x = 0.3742 mol

mass of sucrose hydrolysed = 0.3742*342.2965 = 128.1 grams

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