04. CHEMICAL KINETICS[KARNATAKA CET EXCLUSIVE]
CHEMISTRY(KCET)

285442 \(100 \mathrm{~cm}^3\) of \(1 \mathrm{M} \mathrm{CH}_3 \mathrm{COOH}\) was mixed with 100 \(\mathrm{cm}^3\) of \(2 \mathrm{M} \mathrm{CH}_3 \mathrm{OH}\) to form an ester. The change in the initial rate if each solution is diluted with equal volume of water would be

1 4 times
2 0.25 times
3 2 times
4 0.5 times.
CHEMISTRY(KCET)

285443 In a first order reaction, the concentration of the reactant is reduced to \(12.5 \%\) in one hour. When was it half completed?

1 20 min
2 15 min
3 3 hr
4 30 min
CHEMISTRY(KCET)

285444 Half-life period of a first order reaction is 10 min . Starting with initial concentration 12 M , the rate after 20 min is

1 \(0.693 \times 3 \mathrm{M} \mathrm{min}^{-1}\)
2 \(0.0693 \times 4 \mathrm{~min}^{-1}\)
3 \(0.0693 \mathrm{M} \mathrm{min}^{-1}\)
4 \(0.0693 \times 3 \mathrm{M} \mathrm{min}^{-1}\)
CHEMISTRY(KCET)

285445 \(\mathrm{A}(\mathrm{g}) \xrightarrow{\Delta} \mathrm{P}(\mathrm{g})+\mathrm{Q}(\mathrm{g})+\mathrm{R}(\mathrm{g})\), follows first order kinetics with a half-life of 69.3 s at \(500^{\circ} \mathrm{C}\). Starting from the gas 'A' enclosed in a container at \(500^{\circ} \mathrm{C}\) and at a pressure of 0.4 atm , the total pressure of the system after 230 s will be

1 1.15 atm
2 1.32 atm
3 1.22 atm
4 1.12 atm
CHEMISTRY(KCET)

285442 \(100 \mathrm{~cm}^3\) of \(1 \mathrm{M} \mathrm{CH}_3 \mathrm{COOH}\) was mixed with 100 \(\mathrm{cm}^3\) of \(2 \mathrm{M} \mathrm{CH}_3 \mathrm{OH}\) to form an ester. The change in the initial rate if each solution is diluted with equal volume of water would be

1 4 times
2 0.25 times
3 2 times
4 0.5 times.
CHEMISTRY(KCET)

285443 In a first order reaction, the concentration of the reactant is reduced to \(12.5 \%\) in one hour. When was it half completed?

1 20 min
2 15 min
3 3 hr
4 30 min
CHEMISTRY(KCET)

285444 Half-life period of a first order reaction is 10 min . Starting with initial concentration 12 M , the rate after 20 min is

1 \(0.693 \times 3 \mathrm{M} \mathrm{min}^{-1}\)
2 \(0.0693 \times 4 \mathrm{~min}^{-1}\)
3 \(0.0693 \mathrm{M} \mathrm{min}^{-1}\)
4 \(0.0693 \times 3 \mathrm{M} \mathrm{min}^{-1}\)
CHEMISTRY(KCET)

285445 \(\mathrm{A}(\mathrm{g}) \xrightarrow{\Delta} \mathrm{P}(\mathrm{g})+\mathrm{Q}(\mathrm{g})+\mathrm{R}(\mathrm{g})\), follows first order kinetics with a half-life of 69.3 s at \(500^{\circ} \mathrm{C}\). Starting from the gas 'A' enclosed in a container at \(500^{\circ} \mathrm{C}\) and at a pressure of 0.4 atm , the total pressure of the system after 230 s will be

1 1.15 atm
2 1.32 atm
3 1.22 atm
4 1.12 atm
CHEMISTRY(KCET)

285442 \(100 \mathrm{~cm}^3\) of \(1 \mathrm{M} \mathrm{CH}_3 \mathrm{COOH}\) was mixed with 100 \(\mathrm{cm}^3\) of \(2 \mathrm{M} \mathrm{CH}_3 \mathrm{OH}\) to form an ester. The change in the initial rate if each solution is diluted with equal volume of water would be

1 4 times
2 0.25 times
3 2 times
4 0.5 times.
CHEMISTRY(KCET)

285443 In a first order reaction, the concentration of the reactant is reduced to \(12.5 \%\) in one hour. When was it half completed?

1 20 min
2 15 min
3 3 hr
4 30 min
CHEMISTRY(KCET)

285444 Half-life period of a first order reaction is 10 min . Starting with initial concentration 12 M , the rate after 20 min is

1 \(0.693 \times 3 \mathrm{M} \mathrm{min}^{-1}\)
2 \(0.0693 \times 4 \mathrm{~min}^{-1}\)
3 \(0.0693 \mathrm{M} \mathrm{min}^{-1}\)
4 \(0.0693 \times 3 \mathrm{M} \mathrm{min}^{-1}\)
CHEMISTRY(KCET)

285445 \(\mathrm{A}(\mathrm{g}) \xrightarrow{\Delta} \mathrm{P}(\mathrm{g})+\mathrm{Q}(\mathrm{g})+\mathrm{R}(\mathrm{g})\), follows first order kinetics with a half-life of 69.3 s at \(500^{\circ} \mathrm{C}\). Starting from the gas 'A' enclosed in a container at \(500^{\circ} \mathrm{C}\) and at a pressure of 0.4 atm , the total pressure of the system after 230 s will be

1 1.15 atm
2 1.32 atm
3 1.22 atm
4 1.12 atm
CHEMISTRY(KCET)

285442 \(100 \mathrm{~cm}^3\) of \(1 \mathrm{M} \mathrm{CH}_3 \mathrm{COOH}\) was mixed with 100 \(\mathrm{cm}^3\) of \(2 \mathrm{M} \mathrm{CH}_3 \mathrm{OH}\) to form an ester. The change in the initial rate if each solution is diluted with equal volume of water would be

1 4 times
2 0.25 times
3 2 times
4 0.5 times.
CHEMISTRY(KCET)

285443 In a first order reaction, the concentration of the reactant is reduced to \(12.5 \%\) in one hour. When was it half completed?

1 20 min
2 15 min
3 3 hr
4 30 min
CHEMISTRY(KCET)

285444 Half-life period of a first order reaction is 10 min . Starting with initial concentration 12 M , the rate after 20 min is

1 \(0.693 \times 3 \mathrm{M} \mathrm{min}^{-1}\)
2 \(0.0693 \times 4 \mathrm{~min}^{-1}\)
3 \(0.0693 \mathrm{M} \mathrm{min}^{-1}\)
4 \(0.0693 \times 3 \mathrm{M} \mathrm{min}^{-1}\)
CHEMISTRY(KCET)

285445 \(\mathrm{A}(\mathrm{g}) \xrightarrow{\Delta} \mathrm{P}(\mathrm{g})+\mathrm{Q}(\mathrm{g})+\mathrm{R}(\mathrm{g})\), follows first order kinetics with a half-life of 69.3 s at \(500^{\circ} \mathrm{C}\). Starting from the gas 'A' enclosed in a container at \(500^{\circ} \mathrm{C}\) and at a pressure of 0.4 atm , the total pressure of the system after 230 s will be

1 1.15 atm
2 1.32 atm
3 1.22 atm
4 1.12 atm