Dependence of Rate on Concentration
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CHXII04:CHEMICAL KINETICS

320206 A reaction is first order with respective to \(\mathrm{A}\) and second order with respective to \(\mathrm{B}\). What is the effect on reaction rate if concentration of \(\mathrm{B}\) is increase 3 times?

1 Rate increases 6 times
2 Rate increases 9 times
3 Rate increases 2 times
4 Rate increases 3 times
MHTCET - 2021
CHXII04:CHEMICAL KINETICS

320207 If decomposition of hydrogen peroxide is a first order reaction, it's rate law equation can be represented as

1 \(\mathrm{r}=\dfrac{\mathrm{k}}{\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]}\)
2 \(\mathrm{r}=\mathrm{k}\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]\)
3 \(\mathrm{r}=\mathrm{k} \dfrac{\left[\mathrm{H}_{2} \mathrm{O}\right]\left[\mathrm{O}_{2}\right]^{1 / 2}}{\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]}\)
4 \(\mathrm{r}=\mathrm{k} \dfrac{\left[\mathrm{H}_{2} \mathrm{O}\right]}{\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]\left[\mathrm{O}_{2}\right]^{1 / 2}}\)
MHTCET - 2021
CHXII04:CHEMICAL KINETICS

320208 The rate constant for the reaction,
\(2 \mathrm{~N}_{2} \mathrm{O}_{5} \longrightarrow 4 \mathrm{NO}_{2}+\mathrm{O}_{2} \text { is } 3.0 \times 10^{-5} \mathrm{~s}^{-1} \text {. }\)
If the rate is \(2.40 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~S}^{-1}\), then the concentration of \({{\text{N}}_{\text{2}}}{{\text{O}}_{\text{5}}}\) (in mol \({{\text{L}}^{ - 1}}\)) is

1 1.4
2 1.2
3 0.04
4 0.8
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CHXII04:CHEMICAL KINETICS

320206 A reaction is first order with respective to \(\mathrm{A}\) and second order with respective to \(\mathrm{B}\). What is the effect on reaction rate if concentration of \(\mathrm{B}\) is increase 3 times?

1 Rate increases 6 times
2 Rate increases 9 times
3 Rate increases 2 times
4 Rate increases 3 times
MHTCET - 2021
CHXII04:CHEMICAL KINETICS

320207 If decomposition of hydrogen peroxide is a first order reaction, it's rate law equation can be represented as

1 \(\mathrm{r}=\dfrac{\mathrm{k}}{\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]}\)
2 \(\mathrm{r}=\mathrm{k}\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]\)
3 \(\mathrm{r}=\mathrm{k} \dfrac{\left[\mathrm{H}_{2} \mathrm{O}\right]\left[\mathrm{O}_{2}\right]^{1 / 2}}{\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]}\)
4 \(\mathrm{r}=\mathrm{k} \dfrac{\left[\mathrm{H}_{2} \mathrm{O}\right]}{\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]\left[\mathrm{O}_{2}\right]^{1 / 2}}\)
MHTCET - 2021
CHXII04:CHEMICAL KINETICS

320208 The rate constant for the reaction,
\(2 \mathrm{~N}_{2} \mathrm{O}_{5} \longrightarrow 4 \mathrm{NO}_{2}+\mathrm{O}_{2} \text { is } 3.0 \times 10^{-5} \mathrm{~s}^{-1} \text {. }\)
If the rate is \(2.40 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~S}^{-1}\), then the concentration of \({{\text{N}}_{\text{2}}}{{\text{O}}_{\text{5}}}\) (in mol \({{\text{L}}^{ - 1}}\)) is

1 1.4
2 1.2
3 0.04
4 0.8
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CHXII04:CHEMICAL KINETICS

320206 A reaction is first order with respective to \(\mathrm{A}\) and second order with respective to \(\mathrm{B}\). What is the effect on reaction rate if concentration of \(\mathrm{B}\) is increase 3 times?

1 Rate increases 6 times
2 Rate increases 9 times
3 Rate increases 2 times
4 Rate increases 3 times
MHTCET - 2021
CHXII04:CHEMICAL KINETICS

320207 If decomposition of hydrogen peroxide is a first order reaction, it's rate law equation can be represented as

1 \(\mathrm{r}=\dfrac{\mathrm{k}}{\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]}\)
2 \(\mathrm{r}=\mathrm{k}\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]\)
3 \(\mathrm{r}=\mathrm{k} \dfrac{\left[\mathrm{H}_{2} \mathrm{O}\right]\left[\mathrm{O}_{2}\right]^{1 / 2}}{\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]}\)
4 \(\mathrm{r}=\mathrm{k} \dfrac{\left[\mathrm{H}_{2} \mathrm{O}\right]}{\left[\mathrm{H}_{2} \mathrm{O}_{2}\right]\left[\mathrm{O}_{2}\right]^{1 / 2}}\)
MHTCET - 2021
CHXII04:CHEMICAL KINETICS

320208 The rate constant for the reaction,
\(2 \mathrm{~N}_{2} \mathrm{O}_{5} \longrightarrow 4 \mathrm{NO}_{2}+\mathrm{O}_{2} \text { is } 3.0 \times 10^{-5} \mathrm{~s}^{-1} \text {. }\)
If the rate is \(2.40 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~S}^{-1}\), then the concentration of \({{\text{N}}_{\text{2}}}{{\text{O}}_{\text{5}}}\) (in mol \({{\text{L}}^{ - 1}}\)) is

1 1.4
2 1.2
3 0.04
4 0.8
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