too many kinetics !

1.) the molecularity of the reaction

2 H2(g) + O2(g) --> 2 H2O (l)

is: a)2 b) 3 c)undefined d)1

2) the rate consant for a first order reaction is equal to the initial rate of reaction wheb the initial concentration of the reactant is:

a) 100 M b) 1x 10^-2 C) 1 M d) 0.1 M

3) the hydrolysis of ethyl acetate was carried out separately with 0.075M HCl and 0.075 M H2SO4. Which of the following relations is correct?

a) k(h2so4) >> k(hcl)

b) k(h2so4) = 2 k(hcl)

c) k(h2so4) < k(hcl)

d) k(h2so4)= 8 k(hcl)

64 Answers

1
skygirl ·

uff... yeh kuchh zaada ni hora [3]

everywhere smileys and smileys...

less discussions and more smileys [3] [3] [3]

[dun mind.. jus kiddin'........]

1
KR ·

[3] [3] [3] [3] [3]

1
skygirl ·

yes priyam..!! bingo!!

tell y..................

13
deepanshu001 agarwal ·

ans for 1st is 3.....

21
tapanmast Vora ·

3b?

13
deepanshu001 agarwal ·

i wud lyk add a ques ....

wat is the molecularity of the rxn ...

Cl2 ->2 Cl

1
skygirl ·

yes deepansh ans for first is 3rd.

a big WHY ??

why isnt it 3 ??

33
Abhishek Priyam ·

1(c)

:D

13
deepanshu001 agarwal ·

second shud be C

1
skygirl ·

sory tapan... both are wrong ..

21
tapanmast Vora ·

hey sky answers de do yaar, thn v can soch.

the bawse rule 4 chem

1
skygirl ·

yes second one is C.... thats not a doubt....

but tell y 1 ka C??

13
deepanshu001 agarwal ·

bcuz this is not an elementary reaction....

1
skygirl ·

ans nahi dega yaar iit mein... paper ke saath [2]

isilye thora soch hi lete hai aur 25 days......... [3]

13
deepanshu001 agarwal ·

ans for 3rd ques shud be A....

1
skygirl ·

MATLAB???

ELEMENTARY REACTION IS WHICH ONE ??

IS IT FOR PRODUCTION OF 1 MOLE OF PRODUCT??

THEN ANS SHOULD BE 1.5 ??

Y UNDEFINED??

1
skygirl ·

ans for third is not a..

33
Abhishek Priyam ·

3(C) ???

21
tapanmast Vora ·

1b ?

2 : "wheb" [7]

33
Abhishek Priyam ·

Sky... read 12th NCERT.... for molecularity.. it can't be fraction....

1
skygirl ·

[2]

sorry..........

correct.. forgot that....

well then
two requirements:

1) elementary reaction

2) interger........

[7] [7] [7]

33
Abhishek Priyam ·

bcause.. H2SO4 is dehydrating agent....

and Will form little ester again...

21
tapanmast Vora ·

OH!!

is dat Y aswer for 1 is UNDEFINED

KOI explain 3 ka answer pl

13
deepanshu001 agarwal ·

BUT THEN HOW DOES THAT IMPLY THE ANS FOR THIRD IS C \

PLZ ANS MY QUES IN ONE OF THE ABOVE POSTS 2

13
deepanshu001 agarwal ·

BUT THEN Y ISNT SO THAT Cl will cause nucleophilic substitution and wont lead to hydrolysis
and btw conc h2so4 is a dehydrating agent and not dilute

1
skygirl ·

#5 ) undefined then..........

13
deepanshu001 agarwal ·

sry that not the ans...

1
skygirl ·

deepansh Cl- is better leaving group than OEt- .

it cannnot replace it...

33
Abhishek Priyam ·

#5 answer will be 2 [12]

33
Abhishek Priyam ·

@and btw conc h2so4 is a dehydrating agent and not dilute

agar sher ko akele rakh doge... between sheeps then kya wo ghas khane lagega.... :D

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