Methods to Determine Order of Reaction
CHXII04:CHEMICAL KINETICS

320502 The following data are for the decomposition of
ammonium nitrite in aqueous solution :
\[\begin{array}{*{20}{c}}
{{\bf{Vol}}{\bf{.}}\,{\bf{of}}\,{{\bf{N}}_{\bf{2}}}\,{\bf{in}}\,{\bf{cc}}}&{{\bf{Time(min)}}}\\
{6.25}&{10}\\
{9.00}&{15}\\
{11.40}&{20}\\
{13.65}&{25}\\
{35.65}&{{\rm{infinity}}}
\end{array}\]
The order of reaction is :

1 Zero
2 One
3 Two
4 Three
CHXII04:CHEMICAL KINETICS

320503 Compounds '\(\mathrm{A}\)' and '\(\mathrm{B}\)' react according to the following chemical equation.
\({\text{A(g) + 2B(g)}} \to {\text{2C(g)}}\)
Concentration of either \({\text{'A'}}\,\,{\text{or}}\,\,{\text{'B'}}\) were changed keeping the concentrations of one of the reactants constant and rates were measured as a function of initial concentration. Following results were obtained. Choose the correct option for the rate equations for this reaction.
supporting img

1 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}{\left[ {\rm{A}} \right]^{\rm{2}}}\left[ {\rm{B}} \right]\)
2 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}\left[ {\rm{A}} \right]{\left[ {\rm{B}} \right]^{\rm{2}}}\)
3 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}\left[ {\rm{A}} \right]\left[ {\rm{B}} \right]\)
4 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}{\left[ {\rm{A}} \right]^{\rm{2}}}{\left[ {\rm{B}} \right]^{\rm{0}}}\)
CHXII04:CHEMICAL KINETICS

320504 For a reaction, \({\rm{A}} \to {\rm{B + C}}\), it was found that at the end of 10 minutes from the start, the total optical rotation of the system was \(50^{\circ}\) and when the reaction is complete, it was \(100^{\circ}\). Assuming that only \(\mathrm{B}\) and \(\mathrm{C}\) are optically active and dextrorotory. Calculate the rate constant of this first order reaction.

1 \({\rm{k = 0}}{\rm{.695\;mi}}{{\rm{n}}^{{\rm{ - 1}}}}\)
2 \({\rm{k = 0}}{\rm{.0693se}}{{\rm{c}}^{{\rm{ - 1}}}}\)
3 \({\rm{k = 0}}{\rm{.0693\;mi}}{{\rm{n}}^{{\rm{ - 1}}}}\)
4 \({\rm{k = 0}}{\rm{.0693h}}{{\rm{r}}^{{\rm{ - 1}}}}\)
CHXII04:CHEMICAL KINETICS

320505 Following is the graph between \(\log \,\,{{\rm{t}}_{{\rm{1/2}}}}\) and log a (a initial concentration) for a given reaction at \({\mathrm{27^{\circ} \mathrm{C}}}\).
supporting img
Find the order of reaction.

1 \( - 1\)
2 2
3 0
4 \(\frac{1}{2}\)
CHXII04:CHEMICAL KINETICS

320502 The following data are for the decomposition of
ammonium nitrite in aqueous solution :
\[\begin{array}{*{20}{c}}
{{\bf{Vol}}{\bf{.}}\,{\bf{of}}\,{{\bf{N}}_{\bf{2}}}\,{\bf{in}}\,{\bf{cc}}}&{{\bf{Time(min)}}}\\
{6.25}&{10}\\
{9.00}&{15}\\
{11.40}&{20}\\
{13.65}&{25}\\
{35.65}&{{\rm{infinity}}}
\end{array}\]
The order of reaction is :

1 Zero
2 One
3 Two
4 Three
CHXII04:CHEMICAL KINETICS

320503 Compounds '\(\mathrm{A}\)' and '\(\mathrm{B}\)' react according to the following chemical equation.
\({\text{A(g) + 2B(g)}} \to {\text{2C(g)}}\)
Concentration of either \({\text{'A'}}\,\,{\text{or}}\,\,{\text{'B'}}\) were changed keeping the concentrations of one of the reactants constant and rates were measured as a function of initial concentration. Following results were obtained. Choose the correct option for the rate equations for this reaction.
supporting img

1 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}{\left[ {\rm{A}} \right]^{\rm{2}}}\left[ {\rm{B}} \right]\)
2 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}\left[ {\rm{A}} \right]{\left[ {\rm{B}} \right]^{\rm{2}}}\)
3 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}\left[ {\rm{A}} \right]\left[ {\rm{B}} \right]\)
4 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}{\left[ {\rm{A}} \right]^{\rm{2}}}{\left[ {\rm{B}} \right]^{\rm{0}}}\)
CHXII04:CHEMICAL KINETICS

320504 For a reaction, \({\rm{A}} \to {\rm{B + C}}\), it was found that at the end of 10 minutes from the start, the total optical rotation of the system was \(50^{\circ}\) and when the reaction is complete, it was \(100^{\circ}\). Assuming that only \(\mathrm{B}\) and \(\mathrm{C}\) are optically active and dextrorotory. Calculate the rate constant of this first order reaction.

1 \({\rm{k = 0}}{\rm{.695\;mi}}{{\rm{n}}^{{\rm{ - 1}}}}\)
2 \({\rm{k = 0}}{\rm{.0693se}}{{\rm{c}}^{{\rm{ - 1}}}}\)
3 \({\rm{k = 0}}{\rm{.0693\;mi}}{{\rm{n}}^{{\rm{ - 1}}}}\)
4 \({\rm{k = 0}}{\rm{.0693h}}{{\rm{r}}^{{\rm{ - 1}}}}\)
CHXII04:CHEMICAL KINETICS

320505 Following is the graph between \(\log \,\,{{\rm{t}}_{{\rm{1/2}}}}\) and log a (a initial concentration) for a given reaction at \({\mathrm{27^{\circ} \mathrm{C}}}\).
supporting img
Find the order of reaction.

1 \( - 1\)
2 2
3 0
4 \(\frac{1}{2}\)
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXII04:CHEMICAL KINETICS

320502 The following data are for the decomposition of
ammonium nitrite in aqueous solution :
\[\begin{array}{*{20}{c}}
{{\bf{Vol}}{\bf{.}}\,{\bf{of}}\,{{\bf{N}}_{\bf{2}}}\,{\bf{in}}\,{\bf{cc}}}&{{\bf{Time(min)}}}\\
{6.25}&{10}\\
{9.00}&{15}\\
{11.40}&{20}\\
{13.65}&{25}\\
{35.65}&{{\rm{infinity}}}
\end{array}\]
The order of reaction is :

1 Zero
2 One
3 Two
4 Three
CHXII04:CHEMICAL KINETICS

320503 Compounds '\(\mathrm{A}\)' and '\(\mathrm{B}\)' react according to the following chemical equation.
\({\text{A(g) + 2B(g)}} \to {\text{2C(g)}}\)
Concentration of either \({\text{'A'}}\,\,{\text{or}}\,\,{\text{'B'}}\) were changed keeping the concentrations of one of the reactants constant and rates were measured as a function of initial concentration. Following results were obtained. Choose the correct option for the rate equations for this reaction.
supporting img

1 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}{\left[ {\rm{A}} \right]^{\rm{2}}}\left[ {\rm{B}} \right]\)
2 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}\left[ {\rm{A}} \right]{\left[ {\rm{B}} \right]^{\rm{2}}}\)
3 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}\left[ {\rm{A}} \right]\left[ {\rm{B}} \right]\)
4 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}{\left[ {\rm{A}} \right]^{\rm{2}}}{\left[ {\rm{B}} \right]^{\rm{0}}}\)
CHXII04:CHEMICAL KINETICS

320504 For a reaction, \({\rm{A}} \to {\rm{B + C}}\), it was found that at the end of 10 minutes from the start, the total optical rotation of the system was \(50^{\circ}\) and when the reaction is complete, it was \(100^{\circ}\). Assuming that only \(\mathrm{B}\) and \(\mathrm{C}\) are optically active and dextrorotory. Calculate the rate constant of this first order reaction.

1 \({\rm{k = 0}}{\rm{.695\;mi}}{{\rm{n}}^{{\rm{ - 1}}}}\)
2 \({\rm{k = 0}}{\rm{.0693se}}{{\rm{c}}^{{\rm{ - 1}}}}\)
3 \({\rm{k = 0}}{\rm{.0693\;mi}}{{\rm{n}}^{{\rm{ - 1}}}}\)
4 \({\rm{k = 0}}{\rm{.0693h}}{{\rm{r}}^{{\rm{ - 1}}}}\)
CHXII04:CHEMICAL KINETICS

320505 Following is the graph between \(\log \,\,{{\rm{t}}_{{\rm{1/2}}}}\) and log a (a initial concentration) for a given reaction at \({\mathrm{27^{\circ} \mathrm{C}}}\).
supporting img
Find the order of reaction.

1 \( - 1\)
2 2
3 0
4 \(\frac{1}{2}\)
CHXII04:CHEMICAL KINETICS

320502 The following data are for the decomposition of
ammonium nitrite in aqueous solution :
\[\begin{array}{*{20}{c}}
{{\bf{Vol}}{\bf{.}}\,{\bf{of}}\,{{\bf{N}}_{\bf{2}}}\,{\bf{in}}\,{\bf{cc}}}&{{\bf{Time(min)}}}\\
{6.25}&{10}\\
{9.00}&{15}\\
{11.40}&{20}\\
{13.65}&{25}\\
{35.65}&{{\rm{infinity}}}
\end{array}\]
The order of reaction is :

1 Zero
2 One
3 Two
4 Three
CHXII04:CHEMICAL KINETICS

320503 Compounds '\(\mathrm{A}\)' and '\(\mathrm{B}\)' react according to the following chemical equation.
\({\text{A(g) + 2B(g)}} \to {\text{2C(g)}}\)
Concentration of either \({\text{'A'}}\,\,{\text{or}}\,\,{\text{'B'}}\) were changed keeping the concentrations of one of the reactants constant and rates were measured as a function of initial concentration. Following results were obtained. Choose the correct option for the rate equations for this reaction.
supporting img

1 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}{\left[ {\rm{A}} \right]^{\rm{2}}}\left[ {\rm{B}} \right]\)
2 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}\left[ {\rm{A}} \right]{\left[ {\rm{B}} \right]^{\rm{2}}}\)
3 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}\left[ {\rm{A}} \right]\left[ {\rm{B}} \right]\)
4 \({\rm{Rate}}\,\,{\rm{ = }}\,\,{\rm{k}}{\left[ {\rm{A}} \right]^{\rm{2}}}{\left[ {\rm{B}} \right]^{\rm{0}}}\)
CHXII04:CHEMICAL KINETICS

320504 For a reaction, \({\rm{A}} \to {\rm{B + C}}\), it was found that at the end of 10 minutes from the start, the total optical rotation of the system was \(50^{\circ}\) and when the reaction is complete, it was \(100^{\circ}\). Assuming that only \(\mathrm{B}\) and \(\mathrm{C}\) are optically active and dextrorotory. Calculate the rate constant of this first order reaction.

1 \({\rm{k = 0}}{\rm{.695\;mi}}{{\rm{n}}^{{\rm{ - 1}}}}\)
2 \({\rm{k = 0}}{\rm{.0693se}}{{\rm{c}}^{{\rm{ - 1}}}}\)
3 \({\rm{k = 0}}{\rm{.0693\;mi}}{{\rm{n}}^{{\rm{ - 1}}}}\)
4 \({\rm{k = 0}}{\rm{.0693h}}{{\rm{r}}^{{\rm{ - 1}}}}\)
CHXII04:CHEMICAL KINETICS

320505 Following is the graph between \(\log \,\,{{\rm{t}}_{{\rm{1/2}}}}\) and log a (a initial concentration) for a given reaction at \({\mathrm{27^{\circ} \mathrm{C}}}\).
supporting img
Find the order of reaction.

1 \( - 1\)
2 2
3 0
4 \(\frac{1}{2}\)