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

The decomposition of sulphuryl chloride to SO_2 and Cl_2 is a first order reaction whose half life is 30 minutes. What percentage of the reactant will be decomposed in 2 hours ?

How many grams of silver could be plated out on a serving tray by elelctolysis of a solution containing silver in +1 oxidation state for a period of 8.0 hours at a current of 8.46 amperes? What is the area of the tray if the thickness of the silver plating is 0.0025 cm? density of silver is 10.5 g/cm^3 .

Bicyclohexane was found to undergo two parallel first order rearrangements. At 730 K, the first order rate constant for the formation of cyclohexene was measured as 1.26 xx 10-4 sec-1 , and for the formation of methyl cyclopentane the rate constant was 3.8 xx 10-5 sec–1 . What is the percentage distribution of therearrangement products?

Hydrolysis of methyl acetate in aqueous solution has been studied by titrating the liberated acetic acid against sodium hydroxide. The concentration of the ester at different times is given below. Show that it follows a pseudo first order reaction, as the concentration of water remains nearly constant (55 mol L^(-1)), during the course of the reaction. What is the value of k in this equation? Rate = k [CH_3C00CH_3][H_20]

A substance reacts according to the law of first order reaction the velocity constant of the reaction is 1.0 xx 10^(-2) per sec. If initial conc. of the substance is 0.1 M Find out the initial rate

An important parameter of a photochemical reaction is the quantum efficiency or quantum yield (phi) which is defined as phi=("moles of the substance reaction")/("moles of photons absorbed") Absorption of UV radiation decompose acetone according to the reaction (CH_(3))_(2)COoverset(hv)(rarr)C_(2)H_(6)+CO The quantum yield of a reaction at lambda=330nm is 0.4 . A sample of acetone absorbs monochromatic radiation at lambda330mn at the rate of 7.2xx10^(-3)Js^(-1) (given : N_(A)=6xx10^(23), h=6.6xx10^(-34) in S.I unit). The rate of formation of CO(mol//s) is : a) 2xx10^(-8) b) 8xx10^(-8) c) 8xx10^(-9) d) none of these

The gaseous decomposition reaction, A(g)rarr2B(g)+C(g) is observed to first order over the excess of liquid water at 25^(@)C . It is found that after 10 minutes the total pressure of system is 188 torr and after very long time it is 388 torr. The rate constant of the reaction (in hr^(-1)) is : [Given : vapour pressure of H_(2)O at 25^(@) is 28 torr (ln 2=0.7 , ln 3=1.1, ln10=2.3) ] a) 0.02 b) 1.2 c) 0.2 d) none of these

A first order reaction has a rate constant of 0.0051 min^-1 . If we begin with 0.10 M concentration of the reactant, what concentration of reactant will remain in Solution after 3 hours ?

The reaction ,Sucrose overset(H^(+))rarr Glucose + Fructose, take place at certain temperature while the volume of solution is maintained at 1 litre. At time zero the initial rotation of the mixture is 34^(@) . After 30 minutes the total rotation of solutions is 19^(@) and after a very long time, the total roation is -11^(@) C Find the time when solution was optically inaactive.

A substance reacts according to the law of first order reaction the velocity constant of the reaction is 1.0 xx 10^(-2) sec^(-1) . lfinitial conc. of the substance is 0.1 M Find ont the rate after 1 min.