Recent questions in Chemistry

A reaction was found to be second order with respect [ICl] and first order with respect to $[H_2]$ the overall order of reaction.

asked Dec 13, 2013 by sreemathi.v

1 answer

For a first order $Rx_n$ of rate constant K, $\;t_{ 2/3}$ the time of a reactant to drop to $1/3$ ) is given by:

asked Dec 13, 2013 by sreemathi.v

1 answer

$t_{1/4}$ can be taken as the time taken for the concentration of a reactant to drop to $\large\frac{3}{4}$ of its initial value. If the rate constant for a first order reaction is K, the $t_{1/4}$ can be written as

asked Dec 13, 2013 by sreemathi.v

1 answer

In an experiment (reactant $\rightarrow$ product) we observe that if we increase the reactant to twice then time taken in the concentration of reaction to drop to $\large\frac{1}{2}$ of its value is reduced to $\large\frac{1}{4}$ then order is

asked Dec 13, 2013 by sreemathi.v

1 answer

A graph between $1/[A]^2$ vs t is plotted below where [A] is conc of [A] at time t and $[A_o]$ is initial conc and K is the rate constant of a $Rx^n$ $nA\rightarrow$ product. What is the half life for the $Rx^n(t_{\large\frac{1}{2}})$

asked Dec 12, 2013 by sreemathi.v

1 answer

A graph between $1/[A]^2$ vs t is plotted below where [A] is conc of [A] at time t and $[A_o]$ is initial conc and K is the rate constant of a $Rx^n$ $nA\rightarrow$ product. What is the initial concentration of [A]

asked Dec 12, 2013 by sreemathi.v

1 answer

A graph between $1/[A]^2$ vs t is plotted below where [A] is conc of [A] at time t and $[A_o]$ is initial conc and K is the rate constant of a $Rx^n$ $nA\rightarrow$ product.What is the value of rate constant

asked Dec 12, 2013 by sreemathi.v

1 answer

A graph between $1/[A]^2$ vs t is plotted below where [A] is conc of [A] at time t and $[A_o]$ is initial conc and k is the rate constant of a $Rx^n$ $nA\rightarrow$ product. What is the order of the $Rx^n$

asked Dec 12, 2013 by sreemathi.v

1 answer

For the reaction $aA+bB\rightarrow cC+dD$ the rate of formation of [C] in term of [A] is given by

asked Dec 12, 2013 by sreemathi.v

1 answer

The EMF of cell $Ag,AgCl$ in 0.1M $KCl\parallel sat\;NH_4NO_3\parallel 0.1M\;AgNO_3,Ag$ is $0.45\;volt$ at $25^oC$ .Calculate solubility product & solubility of $AgCl(0.1M\; KCl$ is $85\%$ dissociated & $0.1M$ $AgNO_3$ is $82\%$ dissociated)

asked Dec 12, 2013 by sreemathi.v

1 answer

At $25^oC$ the specific conductance of a saturated solution of $AgCl$ is $2.68\times 10^{-4}Sm^{-1}$ and that of water with which the solution was made is $0.86\times 10^{-4}Sm^{-1}$ .If molar conductances at infinite dilution of $AgNO_3,HNO_3$ and $HCl$ are respectively, $1.33$ $\times 10^{-4},421\times 10^{-4}$ and $426\times10^{-4}Sm^2mol^{-1}$ ,calculate solubility of $AgCl$ in grams per $dm^3$ in water at given temperature

asked Dec 12, 2013 by sreemathi.v

1 answer

$AgNO_3(aq)\;\overset{\overset{electrolysis}{\Large\rightarrow}}{in\;presence\;of\;Ag\;electrode}$ then wrong statement is

asked Dec 12, 2013 by sreemathi.v

1 answer

$AgNO_3(aq)\;\overset{\overset{electrolysis}{\Large\rightarrow}}{in\;presence\;of\;pt\;electrode}$ then at end of electrolysis

asked Dec 12, 2013 by sreemathi.v

1 answer

Which of following is correct statement?

asked Dec 12, 2013 by sreemathi.v

1 answer

Which of following graph is correct?

asked Dec 12, 2013 by sreemathi.v

1 answer

At what $[HNO_3]$ thermodynamic tendency or reduction of $NO_3^-$ into NO and $NO_2$ by $Ag$ is same?

asked Dec 12, 2013 by sreemathi.v

1 answer

$E_{cell}$ for reduction $NO_3^-\rightarrow NO$ by $Ag(s)$ ?

asked Dec 12, 2013 by sreemathi.v

1 answer

If $X$ is specific resistance of electrolyte solution $Na_7SO_4$ and $y(N)$ is concentration of solution then $\Delta m$ is given by

asked Dec 12, 2013 by sreemathi.v

1 answer

$NaOH$ (aq base) was added to an aqueous HCl solution gradually and the conductivity of solution was measured.The plot of conductivity vs volume of NaOH added

asked Dec 12, 2013 by sreemathi.v

1 answer

For strong electrolytes find $\Lambda_m^{\infty}$ of $CH_3COOH$

asked Dec 12, 2013 by sreemathi.v

1 answer