Chemical Kinetics And Nuclear Chemistry, Popular Questions: Jee 1 year CHEMISTRY, Chemistry

Benedict William asked a question

Subject: Chemistry, asked on on 12/6/16

1 dm3 of 2 M CH3COOH is mixed with 1 dm3 of 3 M ethanol to form ester. The decrease in the initial rate if each solution is diluted with an equal volume of water would be

Almas asked a question

Subject: Chemistry, asked on on 9/10/16

N2 + 3H2 → 2NH3 Rate of production of NH3 is 0.001 kg/hr–1 then rate of decomposition of H2 will be :-
(1)   0.003 kg hr–1
(2)   0.007 kg hr–1
(3)   0.006 kg hr–1
(4)   0.00017 kg hr–1

Benedict William asked a question

Subject: Chemistry, asked on on 12/6/16

The reaction, 2SO2(g)+O2(g) → 2SO3(g) is carried out in a 1 dm3 vessel and 2 dm3 vessel separately. The ratio of reaction velocities will be

Neha Jain & 1 other asked a question

Subject: Chemistry, asked on on 4/7/16

A flask contains a mixture of compounds A&B .Both compounds decomposed by 1st order kinetics.The half lives are 54 minutes for A &18 minutes for B.If the concentrations of A & B are equal initially,how long will it take for the concentration of A to be 4 times that of B.

Prithesh Dwivedi asked a question

Subject: Chemistry, asked on on 3/11/16

Find out percentage of the reactant molecules crossing over the energy barrier at 325K. given that delta H₃₂₅= 0.12 kcal , E_a(b) 0.02kcal

Tanishka Gupta asked a question

Subject: Chemistry, asked on on 2/5/18

Solve que 22:

22. In dilute aqueous H₂SO₄, the complex diaquoudioxalatoferrate (II) is oxidized by MnO₄^-. For this reaction, the ratio of the rate of change of [H⁺] to the rate of change of [MnO₄^-] is

Palak Srivastava asked a question

Subject: Chemistry, asked on on 8/10/18

the half-life period of a first-order reaction is 15 minutes. how much reaction will be completed in 30 min?

Tanishka Gupta asked a question

Subject: Chemistry, asked on on 11/5/18

Solve question 19:

Wooden article and freshly cut tree show activity of 7.6 and and 15.2 min^-1 gm^-1 of carbon (t_1/2= 5760 years) respectively. The age of article in years, is

(A) 5760 (B) 5760 \times (\frac{15.2}{7.6}) (C) 5760 \times (\frac{7.6}{15.2}) (D) 5760 \times (15.2 - 7.6)

Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 1/8/17

A SOLUTE AB2 dissociate 50% and associate 30%(trimerize).the value of vant hoff factor will be?

Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Palak Srivastava asked a question

Subject: Chemistry, asked on on 8/10/18

In a second order reaction, 20% of a substance is dissociated in 40minutes. What is the time taken by the 80% of its dissociation?

Tanishka Gupta asked a question

Subject: Chemistry, asked on on 9/5/18

Q.9. The activity of the radioactive sample drops to

{(\frac{1}{64})}^{t h}

of its original value in 2 hr find the decay constant

(λ)

.

Prithesh Dwivedi asked a question

Subject: Chemistry, asked on on 3/11/16

Decomposition of non volatile solute (A) into another non volatile solute B and C.When dissolved in water follows first order kinetics as
A(s)^H2O------ 2B(s) + C(s)
If initially two moles of A is dissolved in 360g of H₂O and left for decomposition at constant temperature (25 deg) Then P_S in the given table is ( assuming A,B and C are miscible in water)
S.N.        Time                  The vapour pressure of solution
1.           12 hr                                20mm Hg
2 .           80hr                                P_S
Vapour pressure of H₂O at 25 deg is 24mm Hg(Log2 = 0.30)

Devi Das asked a question

Subject: Chemistry, asked on on 13/5/17

Why hydrolysis of Sucrose is called pseudo uni-molecular reaction ?

Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Palak Srivastava asked a question

Subject: Chemistry, asked on on 8/10/18

Compound A and B react with a common reagent with first-order kinetics in both the cases. If 99% of A must react before 1% of B has reacted. What is the minimum ratio for their respective rate constants?

Almas asked a question

Subject: Chemistry, asked on on 10/4/17

If concentration of a first order reaction is increased by 'x' times then rate constant (k) becomes
a) e^-k/x
b) x/k
c) k
d) e^k/x

Tanishka Gupta asked a question

Subject: Chemistry, asked on on 30/4/18

Que 11th explanatio:

11. Statement -1: The half life of reaction with rate law, rate of reaction =

\frac{k_{1} [A]}{1 + k_{2} [A]}

is depend on initial concentration of reactant A at very high concentration.

Statement -2 : The reaction is first order at very low concentration of A.
(A) Statement -1 is true, statement-2 is true and Statement-2 is correct explanation for Statement-1.
(B) Statement -1 is true, Statement-2 true of Statement-2 is NOT correct explanation for Statement -1.
(C) Statement -1 is true, Statement-2 is false
(D) Statement -1 is false, Statement -2 is true.

Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Krishna Priya asked a question

Subject: Chemistry, asked on on 17/7/16

Please answer this question ....the answer as given in the book is the (e) part

Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Prithesh Dwivedi asked a question

Subject: Chemistry, asked on on 4/11/16

please solve image reaction

Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Tanishka Gupta asked a question

Subject: Chemistry, asked on on 30/4/18

Solve que 12.

Q12. For the reaction A

\to

B, the rate law expression is –

\frac{d [A]}{dt}

= k [A]^1/2. If initial concentration of A is [A]₀, then
(A) The integerated rate expression is k =

\frac{2}{t}

(A_{_{0}}^{\frac{1}{2}} - A^{\frac{1}{2}})

(B) The graph of

\sqrt{A}

Vs t will be

(C) The half life period t₁_/2 =

\frac{K}{2 {[A]}_{0}^{\frac{1}{2}}}

(D) The time taken for 75% completion of reaction t_3/4 =

\frac{\sqrt{{[A]}_{0}}}{K}

Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Prithesh Dwivedi asked a question

Subject: Chemistry, asked on on 4/11/16

please solve image Question.

Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Tanishka Gupta asked a question

Subject: Chemistry, asked on on 3/5/18

Solve que 57:

57. The reaction

2 NO + {Br}_{2} \to 2 NOBr

, is supposed to follow the following mechanism.

(i) N O + B r_{2} \overset{f a s t}{⇌} N O B r_{2} (i i) N O B r_{2} + N O \overset{s l o w}{\to} 2 N O B r

Suggest the rate of law expression.

Alok Singh asked a question

Subject: Chemistry, asked on on 8/2/18

if activation energy(Ea) = 94.14 kJ/mol; k = 1.8*10^-1 sec^-1 and T is 313 K
What is the value of of frequency factor?

Tanishka Gupta asked a question

Subject: Chemistry, asked on on 26/4/18

Que 1st and 2nd

Sonu asked a question

Subject: Chemistry, asked on on 22/4/17

rate of reaction is always positive whereas rate of appearanace and disapppearance can be positive and negative respectively

Palak Srivastava asked a question

Subject: Chemistry, asked on on 8/10/18

At least how many half lives should elapse for a reaction A---> products so that the reaction is at least 95% completed?

Deepshikha asked a question

Subject: Chemistry, asked on on 25/3/20

the rate constant k for the first order gas phase decomposition of ethyl iodide
C2H5 ---> C2H5 +HI is1.6*10 POWER -5 AT 600K AND 6.36 -10 POWER -3 AT 700K
CALCULATE THE ENERGY OF ACTIVATION FOR THIS REACTION

Aishwarya Trivedi asked a question

Subject: Chemistry, asked on on 6/7/17

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Deepshikha asked a question

Subject: Chemistry, asked on on 25/3/20

what would be the energy of activation for a reaction when a change in temp. from 20 degree c to 30 degree c exactly triples the rate of the reaction

Asmit Sinha asked a question

Subject: Chemistry, asked on on 31/5/20

sir class test on this topic is not available