Recent questions tagged rate-of-reaction

The photochemical reactions are those which

asked Dec 17, 2013 by sreemathi.v

1 answer

Consider the following reaction :$NaOH(aq)+HCl(aq)\rightarrow H_2O(l)+NaCl(aq)$.The rate of reaction can be found by observing change in concentration

asked Dec 17, 2013 by sreemathi.v

1 answer

Consider the statement: Solid Mg added to 2M HCl. In the first 10 seconds,the temperature of container increased by $1^0C$ and 20ml of $H_2$ was produced. Determine rate of reaction.

asked Dec 17, 2013 by sreemathi.v

1 answer

In the following reaction and graph:$2H_2O_2(l)\rightarrow 2H_2O_2+O_2(g)$, he average rate of reaction is greatest in which time period?

asked Dec 17, 2013 by sreemathi.v

1 answer

Consider the following reaction; $2H_2O_2(l)\rightarrow 2H_2O(l)+O_2(g)$ which graph shows the relation between rate of consumption of $H_2O_2$ and time?

asked Dec 17, 2013 by sreemathi.v

1 answer

The rate of chemical equation is equal to slope of graph with ones labelled

asked Dec 17, 2013 by sreemathi.v

1 answer

Ammonia can be oxidized by oxygen to produce $NO_2$ according to reaction $4NH_3+7O_2\rightarrow 4NO_2+6H_2O$.If water is formed of $36\;mol\;L^{-1}min^{-1}$.Then respective rates of $NH_3,O_2$ used will be(in M/min)

asked Dec 17, 2013 by sreemathi.v

1 answer

For the reaction $A\;\;\;\underrightarrow{k_1}\;\;\;B\;\;\;\underrightarrow{k_2}\;\;\;C$, select the correct statement:

asked Dec 17, 2013 by sreemathi.v

1 answer

A first order reaction is 50% completed in 45 minute at $87^oC$ and in 9minutes at $127^oC$.The energy of activation of the reaction is

asked Dec 17, 2013 by sreemathi.v

1 answer

The decomposition of $N_2O_5$ is a first order reaction represented by $N_2O_5\rightarrow N_2O_4+\large\frac{1}{2}$$O_2$.After 15minutes the volume of $O_2$ produced is 9ml & at the end of the reaction 35ml.The rate constant is equal to

asked Dec 16, 2013 by sreemathi.v

1 answer

What is the unit of k of a $n^{th}$ order reaction?

asked Dec 16, 2013 by sreemathi.v

1 answer

What is the rate of the reaction $A+B\rightarrow C$ based on the following experiments:

asked Dec 16, 2013 by sreemathi.v

1 answer

For the parallel reactions depicted below, which of the following options are correct?

asked Dec 16, 2013 by sreemathi.v

1 answer

For a first order reaction $A\rightarrow 2B$ ,graph for $\large\frac{d[B]}{dt}$ vs $\large\frac{-d[A]}{dt}$ is

asked Dec 16, 2013 by sreemathi.v

1 answer

Consider the following first order completing reactions : $X\;\overset{k_1}{\longrightarrow}\;A+B$ and $Y\;\overset{k_2}{\longrightarrow}\;C+D$ if $50\%$ of the reaction of $X$ was completed when $87.5\%$ of the reaction of $Y$ was completed , the ratio of their constants $(k_1/k_2)$ is

asked Dec 16, 2013 by sreemathi.v

1 answer

For the reaction $A\rightarrow B$ ,the rate law expression is $-\large\frac{d[A]}{dt}$$=k[A]^{3/2}$. If the initial concentration of $A$ is $[A]_0$, which of the following is true?

asked Dec 16, 2013 by sreemathi.v

1 answer

For reaction $C+D\rightarrow A+B$,the rate expression is rate=$k[C]^{1/2}[D]^{1/2}$ starting with initial concentration of 4M of C and D each,what is time taken for concentration of A to become 0.25M.Given :$k=2.303\times 10^{-2}sec^{-1}$

asked Dec 16, 2013 by sreemathi.v

1 answer

Rate of reaction can be expressed by Arrhenius equation as $k=Ae^{\large\frac{-E_a}{RT}}$.Select the correct statement

asked Dec 16, 2013 by sreemathi.v

1 answer

The rate law for a reaction $A\rightarrow B$ is rate=$K[A]^m[B]^n$.On tripling the concentration of A and halving the concentration of B,the ratio of new rate to the earlier rate of the reaction will be as

asked Dec 16, 2013 by sreemathi.v

1 answer

The rate constant for a first order reaction is $20hr^{-1}$.The half life of the reaction will be

asked Dec 16, 2013 by sreemathi.v

1 answer