Home
Class 12
CHEMISTRY
Sucrose decomposes in acid solution into...

Sucrose decomposes in acid solution into glucose and fructose according to the first order rate law, with `t_(1//2)=3.00hr.` What fraction of sample of sucrose remains after `8 hr` ?

Text Solution

AI Generated Solution

To solve the problem of how much sucrose remains after 8 hours of decomposition in an acid solution, we will follow these steps: ### Step 1: Determine the rate constant (k) The half-life (t₁/₂) for a first-order reaction is given by the formula: \[ t_{1/2} = \frac{0.693}{k} \] Given that \( t_{1/2} = 3.00 \, \text{hr} \), we can rearrange the formula to solve for k: \[ k = \frac{0.693}{t_{1/2}} = \frac{0.693}{3.00 \, \text{hr}} \] ...
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    NCERT ENGLISH|Exercise Exercise|1 Videos
  • CHEMICAL KINETICS

    NCERT ENGLISH|Exercise SOLVED EXAMPLE|1 Videos
  • BIOMOLECULES

    NCERT ENGLISH|Exercise Exercise|33 Videos
  • CHEMISTRY IN EVERYDAY LIFE

    NCERT ENGLISH|Exercise Exercise|32 Videos

Similar Questions

Explore conceptually related problems

Mean life of a radioactive sample is t_0 . What fraction of sample remains left after time t_0ln_2 ?

Substance A isomerizes according to a first order rate law with k = 5.0 xx 10^(-5) s^(-1) . (a) If the initial concentration of A is 1.00 M , what is the initial rate? (b) What is the rate after 1.00 hr ?

A substance ''A'' decomposes in solution following the first order kinetics. Flask I contains 1L of 1 M solution of A and falsk II constains 100 mL of 0.6 M solution. After 8 hr , the concentration, of A in flask I becomes 0.25 M . What will be the time for concentration of A in flask II to become 0.3 M ?

What is the ratio of t_(1//2) to t_(1//3) (for the amount of substance left) for first order reaction ?

The decomposition of phosphine, PH_3 proceeds according to the following equation: 4PH_3 (g) to P_4 (g) + 6H_2 (g) It is found that the reaction follows the following rate equation: Rate =k[PH_3] The half-life of PH_3 is 37.9s at 120^@ C. What fraction of the original sample of PH_3 remains behind after 1 minute?

In a first order reaction, 75% of the reactants disappeared in 1.386 hr . What is the rate constant ?

What fraction of a reactant remains unreacted after 40 min if t_(1//2) is of the reaction is 20 min? consider the reaction is first order

The concentration of a solution is changed from 0.2 to 0.4, then what will be rate and rate constant. The reaction is of first order and rate constant is K = 1xx10^(–6) :