Recently Active Chemistry Questions

100 ml of buffer of 1M NH# and 1M NH4+ are placed in 2 voltaic cells separately.A 1.5A current is passed through both cells for 20min.If electrolyssi of water takes palce.. 2H20 +O2 +4e →4OH- ---------(RHS) 2H2O→4H++O2+4e ...

pls reply .....i m using solomons and peter sykes for organic chem .... as u might be knowing that these books dont hav sums for JEE level .........so can u pls tell me wat shud i do ???i hav RK Gupta [2004 edition ] ........ ...

*Image* my doubt is not Q1 but Q2 how to find overall yield???? ...

1. In the manufacture of glass,addition of MnO2 gives A.Yellow colour. B.Red colour C.Violet colour D.Pink colour 2. When iodine reacts with NaF,NaBr and NaCl A. It gives mixture of F2,Cl2,Br2 B. gives Cl2 C. It gives Br2 D. ...

write the hydrolysis product *Image* ...

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I am using Sanyal for organic reactions and Finar ( OLD edition ) for organic chem... but pls can u tell me which book to practise questions from... I don't like Arihant (RK Gupta ) as there are tooooooo many mistakes... espe ...

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how to find the no. of sigma bonds in P4O10 and what will be it's structure? what will be the no. of structural isomers of the formula C4H10O? how it is done? what is the no. of isomers for the compound with molecular formula ...

C7H10 →→→→PRODUCT(on ozonolysis) product→→→→→??????????????(on using Zn with acetic acid ...

pls tell the product... 1. Mg/ ether (excess) __________________ o-Bromobenzyl bromide ? 2. H2O ...

1.A substance that will deliquesce in the normal laboratory atmosphere is: (a) Cuso4 (b) NaOH (C) SiO2 (d) All of these ...

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Ques1) 50 ml of a weak monobasic acid (HA) requires 21 ml 0.2 M NaOH for complete equivalence. If pH of sol n upon addition of 7 mL of this alkali to 25 mL of the above soln of HA is 5.8 , then the pKa of the acid is (a) 6.1 ...

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ans q1 ...

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the dies alder reaction occurs primarily in an endo rather than exo fashion when the reaction is kinetically controlled.........................can anyone plz help me to identify the groups which are in endo o exo fashion ...

Guys, provide here the easiest and shortest way to convert Chlorobenzene to phenol. Burning Desire answered this once.. but I'm still not able to understand the reason ...

The d-orbital participating in sp3d hybdn. is ??? Pls explain..... ...

\Delta G=\Delta H -T\Delta S\ and \Delta \ G=\Delta H +T[\frac {d(\Delta G)}{dT}]_P then find (\frac {dE_{cell}}{dT})= ?? ...

I was taught that while drawing the resonating structure, the structure which has more charge separation has more energy. Please explain this. I thought that energy decreases with increase in separation ...

what is order of activation towards electrophilic substitution among -aniline, monoalkyl sustituted aniline & dialkyl substituted aniline...please state the reason too ,i meant among -NH2 ,-NHR,-NR2. ...

whats the formula that gives the no of stereoisomers a compound will form??? for the following tell the no. of stereoisomers H3C(OH)HC-CH=CH-CH(OH)CH3 ...

can anyone tell me how to find out if a molecular orbital has nodal plane or not pls ...

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wht is pinacol pinacolone??? ...

IN THE NUCLEUS OF AN ATOM THE PROTONS ARE POSETIVELY CHARGED & NEUTRONS ARE NEUTRAL,SO HOW COME IS THE NUCLEUS SO STABLE?DONT THE +IVELY CHARGED PROTONS REPEL EACH OTHER. ...

Colours in complexes are decided by the constituents of the coordination sphere, right? So why do K4[Fe(CN)6] and Fe2[Fe(CN)6] differ in colour though coordination sphere is intact? ...