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but I think answer should be 44.00 cm^3

see if we treat it like this

1.76 + 1.76 + 1.76-------------------upto 25 times

then answer should be 44.00 cm^3

r arihant papers originally in pdf form or I m not able to load them in multimedia form??
plz reply

yup! u r true...

first it will form ketal like product, then raney nickel will reduce to cyclohexane and ethanedithiol,

I think soo....but not very much sure..

I think cyclohexane will be major but not very much sure..

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no dude! not all
only govt. employed Doctors are gazzeted officers......

for second one..

consider the series

S = x + 2x^2 + 3x^3 + 4x^4 ----------- infinity
its an AGP, solve to get

x + 2x^2 + 3x^3 + 4x^4 ----------- infinity = x/(1-x)^2

differentiate both sides

1 + 2^2.x + 3^2.x^2 + 4^.x^3----------infinity = d/dx[x/(1-x)^2]

see, LHS is what u want

now solve RHS to get ur answer

cheers !

yup! aatish's xplanation is correct..

COOH is given more pref. than SO3H..

in FIITJEE's solution to AIEEE 2008, its given SO3H > COOH

but its wrong, in actual COOH > SO3H

(V - Vc).7800.g = 6000 .............(1)

V.1000.g = 2000 ..............(2)

solve (1) and (2) to get Vc = 0.123 m^3