Rate of Reaction

Q. The rate of a reaction is expressed in different ways as follows:
$\frac{1}{2}\left(\frac{d\left[C\right]}{dt}\right)=-\frac{1}{3}\left(\frac{d\left[D\right]}{dt}\right)=\frac{1}{4}\left(\frac{d\left[A\right]}{dt}\right)=-\left(\frac{d\left[B\right]}{dt}\right)$
The reaction is

1. $4A+2B\to 2C+3D$
2. $B+\left(1/2\right)D\to 4A+3C$
3. $4A+B\to 2C+3D$
4. $B+3D\to 4A+2C$

Q. In the following reaction, how is the rate of appearance of product related to the rate of disappearance of the reactant?
$Br{O}_3^{-}\left(aq\right)+5B{r}^{-1}\left(aq\right)+6H^{+}\to 3B{r}_2\left(l\right)+2H_{2}O\left(l\right)$

1. $\frac{d\left[B{r}_2\right]}{dt}=-\frac{d\left[B{r}^{-}\right]}{dt}$
2. $\frac{d\left[B{r}_2\right]}{dt}=\frac{3}{5}\frac{d\left[B{r}^{-}\right]}{dt}$
3. $\frac{d\left[B{r}_2\right]}{dt}=-\frac{3}{5}\frac{d\left[B{r}^{-}\right]}{dt}$
4. $\frac{d\left[B{r}_2\right]}{dt}=-\frac{5}{3}\frac{d\left[B{r}^{-}\right]}{dt}$

Q.

For the non - stoichiometric reaction, 2A+B $\to$ C + D, the following kinetic data were obtained in three separate experiments, all at 298 K.

$\begin{array}{cccc}& \text{Initial}& \text{Initial}& \text{Initial rate of}\\ & \text{concentration}& \text{concentration}& \text{formation of C}\\ & \left[A\right]& \left[B\right]& \left(mol{L}^{-1}{s}^{-1}\right)\\ \left(i\right)& 0.1M& 0.1M& 1.2\times {10}^{-3}\\ \left(ii\right)& 0.1M& 0.2M& 1.2\times 1^{-3}\\ \left(iii\right)& 0.2M& 0.1M& 2.4\times {10}^{-3}\end{array}$ The rate law for the formation of C is

1. $\frac{dC}{dt}=k\left[A{]}^2\right[B]$

2. $\frac{dC}{dt}=k\left[A\right]\left[B\right]$

3. $\frac{dC}{dt}=k\left[A\right][B{]}^2$

4. $\frac{dC}{dt}=k\left[A\right]$

Q. A catalyst can change the rate of chemical reaction.

Q.

When the dragons of Danaerys the Dragon queen burn their victims, the following reaction takes place.

If the dragon burned 1000 moles of O₂ in 10 seconds, what would be the rate of production of CO₂?

1. 2000 mol sec^-1
2. 100 mol sec^-1
3. 200 mol sec^-1
4. 1000 mol sec^-1

Q.

Select the rate law that conforms to the following data for the reaction : $A+B\to Products$
$\begin{array}{cccc}ExpNo.& \left[A\right]\left(mol{L}^{-1}\right)& \left[B\right]\left(mol{L}^{-1}\right)& Initialrate\left(mol{L}^{-1}{S}^{-1}\right)\\ 1& 0.0012& 0.0035& 1\times {10}^{-4}\\ 2& 0.024& 0.070& 8\times {10}^{-3}\\ 3& 0.024& 0.035& 1\times {10}^{-3}\\ 4& 0.012& 0.070& 8\times {10}^{-3}\end{array}$

1. $-\frac{d\left[A\right]}{dt}=k\left[A\right][B{]}^2$

2. $-\frac{d\left[A\right]}{dt}=k\left[A{]}^2\right[B]$
   

3. $-\frac{d\left[A\right]}{dt}=k\left[A\right][B{]}^3$

4. $-\frac{d\left[A\right]}{dt}=k[B{]}^3$

Q. For the elementary reaction, M $\to$ N the rate of disappearance of M increases by a factor of 8 upon doubling the concentration of M. The order of the reaction with respect to M is

1. 4
2. 3
3. 2
4. 1

Q. What is rust and mention the necessary conditions for rusting?

Q.

Let us dive into the land of Westeros!

When the dragons ofDanaerysthe dragon queen burn their victims, the following reaction takes place:

$2C+O_2⟶2C{O}_2$

The average rate of reaction could be expressed as?

1. 

2. All of the above

3. 

4. 

Q.

Select the rate law that conforms to the following data for the reaction : $A+B\to Products$
$\begin{array}{cccc}ExpNo.& \left[A\right]\left(mol{L}^{-1}\right)& \left[B\right]\left(mol{L}^{-1}\right)& Initialrate\left(mol{L}^{-1}{S}^{-1}\right)\\ 1& 0.0012& 0.0035& 1\times {10}^{-4}\\ 2& 0.024& 0.070& 8\times {10}^{-3}\\ 3& 0.024& 0.035& 1\times {10}^{-3}\\ 4& 0.012& 0.070& 8\times {10}^{-3}\end{array}$

1. $-\frac{d\left[A\right]}{dt}=k\left[A\right][B{]}^3$

2. $-\frac{d\left[A\right]}{dt}=k\left[A{]}^2\right[B]$

3. $-\frac{d\left[A\right]}{dt}=k\left[A\right][B{]}^2$

4. $-\frac{d\left[A\right]}{dt}=k[B{]}^3$