Email
Chat with tutors
Login
Ask Questions, Get Answers
Menu
X
home
ask
tuition
questions
practice
papers
mobile
tutors
pricing
X
Recent questions tagged chemistry
Questions
A reaction was found to be second order with respect [ICl] and first order with respect to $[H_2]$ the overall order of reaction.
order-of-a-reaction
physical-chemistry
class12
ch4
general-characteristics
jeemain
chemistry
chemical-kinetics
easy
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:
order-of-a-reaction
first-order-reactions
physical-chemistry
class12
ch4
jeemain
chemistry
chemical-kinetics
easy
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
physical-chemistry
class12
ch4
rate-of-reaction
general-characteristics
jeemain
chemistry
chemical-kinetics
easy
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
jeemain
chemistry
chemical-kinetics
order-of-a-reaction
physical-chemistry
class12
ch4
general-characteristics
medium
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 $Rx^n(t_{\large\frac{1}{2}})$
order-of-a-reaction
physical-chemistry
class12
ch4
general-characteristics
medium
half-life
jeemain
chemistry
chemical-kinetics
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]
jeemain
chemistry
chemical-kinetics
basics
physical-chemistry
class12
ch4
general-characteristics
medium
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
jeemain
chemistry
chemical-kinetics
physical-chemistry
class12
ch4
rate-of-reaction
general-characteristics
medium
basics
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 $Rx^n$
jeemain
chemistry
chemical-kinetics
order-of-a-reaction
physical-chemistry
class12
ch4
general-characteristics
medium
basics
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
jeemain
chemistry
chemical-kinetics
physical-chemistry
class12
ch4
rate-of-reaction
general-characteristics
easy
basics
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)
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q50
difficult
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
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q49
difficult
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
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q48
difficult
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
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q47
difficult
asked
Dec 12, 2013
by
sreemathi.v
1
answer
Which of following is correct statement?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q46
difficult
asked
Dec 12, 2013
by
sreemathi.v
1
answer
Which of following graph is correct?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q45
difficult
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?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q44
difficult
asked
Dec 12, 2013
by
sreemathi.v
1
answer
$E_{cell}$ for reduction $NO_3^-\rightarrow NO$ by $Ag(s)$?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q43
difficult
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
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q42
easy
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
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q41
difficult
asked
Dec 12, 2013
by
sreemathi.v
1
answer
For strong electrolytes find $\Lambda_m^{\infty}$ of $CH_3COOH$
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q40
easy
asked
Dec 12, 2013
by
sreemathi.v
1
answer
Among the following,the intensive property is (are)
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q39
easy
asked
Dec 12, 2013
by
sreemathi.v
1
answer
Find the time through which an average current 1.93Amp passed to reduce 0.2mol of $MgCl_2$ into Mg .The current efficiency is 60%
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q38
difficult
asked
Dec 11, 2013
by
sreemathi.v
1
answer
$Cd(Hg).CdSO_4.\large\frac{8}{3}$$H_2O(s)\parallel CdSO_4(sat)Hg_2SO_4(s)Hg$ and cell reaction is $Cd(Hg)+Hg_2SO_4(s)+\large\frac{8}{3}$$H_2O(l)\rightarrow CdSO_4.\large\frac{8}{3}$$H_2O(s)+2Hg(l)$.EMF of cell is 1.1V at $25^oC$.Then $\Delta H^o$ will be
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q37
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
Which of following is a wrong statement?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q36
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
The resistance of 0.01M of solution of an electrolyte was found to be $150\Omega$ at $25^oC$.Calculate equivalent conductance.cell constant =$0.80cm^{-1}$ [For given solution $n$ factor =2]
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q35
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
Calculate EMF of cell Pt,$H_2(1\;atm)/CH_3COOH(0.1M)\parallel NH_3(aq)(0.01N)/H_2\;atm$.Given :$K_a(CH_3COOH)=1.8\times 10^{-5},K_b(NH_3)=1.8\times 10^{-5}$
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q34
difficult
asked
Dec 11, 2013
by
sreemathi.v
1
answer
Self reduction is possible in which of following :
sat
chemistry
oxidation & reduction
jeemain
unit8
redox-reactions-and-electrochemistry
q33
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
Which of the following is wrong statement?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q32
difficult
asked
Dec 11, 2013
by
sreemathi.v
1
answer
Which of the following reactions are not possible ?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q31
easy
asked
Dec 11, 2013
by
sreemathi.v
1
answer
Arrange $F_2,Cl_2,Br_2,I_2$ in order of increasing SRP
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q30
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
$CuSO_4$ solution is not stable in $Zn$ container because of
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q29
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
$E_{AgI/Ag/I^-}=$?,$E^o_{Ag^+/Ag}=0.8V,K_{spAg I}=10^{-18}$
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q28
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
For hydrogen concentration cell in working condition ,the correct relation is
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q27
difficult
asked
Dec 11, 2013
by
sreemathi.v
1
answer
An electrochemical cell is shown below : $Pt, H_2(1\;atm)|HCL(0.1\;M| CH_3COOH(0.1\;M)|H_2(1\;atm)Pt$ The EMF of the cell will not be zero , because :
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q26
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
The potential of hydrogen electrode at $25^{\circ} C$ will be:$(PH_2 =1\; atm, concentration\; of\; H^{+} = 0.1M)$
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q25
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
$Cu/CuSO_4\parallel AgNO_3/Ag$, Find $K_{eq}$ for the reaction. Given : $E^o_{Cu^{+2}/Cu}=0.34, E^o_{Ag^+/Ag}=0.8, T=298K$
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q24
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
For reaction $m^{x+}(aq)+xe^-\rightleftharpoons m(s)$ the nature of graph between $E_{m^{x+}/m}$ vs $\log[m^{x+}]$ is
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q23
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
Refer to the below equation :
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q22
easy
asked
Dec 11, 2013
by
sreemathi.v
1
answer
$E^o\large\frac{A^{+3}}{A^+}$$=xV,E^o\large\frac{A^{+3}}{A^{+2}}$$=yV,E\large\frac{A^{+2}}{A^+}=$?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q21
easy
asked
Dec 11, 2013
by
sreemathi.v
1
answer
Which electrolyte can be used for salt bridge between $Ag^+,Pb^{+2},Hg^{+2},Cu^{+},Te^+$ ions
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q20
difficult
asked
Dec 10, 2013
by
sreemathi.v
1
answer
Which of following is false for salt bridge?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q19
medium
asked
Dec 10, 2013
by
sreemathi.v
1
answer
$E^o_{Zn^{+2}/Zn}=0.76V,E^o_{Cu^{+2}/Cu}=0.34V$ find $\Delta G^orx_n$ of following cell $Zn/Zn^{+2}\parallel Cu^{+2}/Cu$
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q18
easy
asked
Dec 10, 2013
by
sreemathi.v
1
answer
The correct cell reaction for given cell is $Sn/Sn^{+2}\parallel Ag^+/Ag$
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q17
easy
asked
Dec 10, 2013
by
sreemathi.v
1
answer
$E^o_{Zn^{+2}/Zn}=-0.76V$.So $E^o_{Zn/Zn^{+2}}=$?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q16
easy
asked
Dec 10, 2013
by
sreemathi.v
1
answer
Which of the following relation is correct?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q15
easy
asked
Dec 10, 2013
by
sreemathi.v
1
answer
What is the direction of current in following galvanic cell?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q14
medium
asked
Dec 10, 2013
by
sreemathi.v
1
answer
The charge required for oxidation of $\large\frac{3}{2}$ mole of $Sn^{2+}$ to $Sn^{4+}$ is
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q13
easy
asked
Dec 10, 2013
by
sreemathi.v
1
answer
During discharging of lead steerage battery,which of the following is false ?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q12
easy
asked
Dec 10, 2013
by
sreemathi.v
1
answer
In salt bridge the electrolyte used should be
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q11
easy
asked
Dec 10, 2013
by
sreemathi.v
1
answer
In the calomel half cell,the reduction $rx_n$ is
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q10
easy
asked
Dec 10, 2013
by
sreemathi.v
1
answer
Page:
« prev
1
...
368
369
370
371
372
373
374
...
393
next »
Home
Ask
Tuition
Questions
Practice
Your payment for
is successful.
Continue
...