Recently Active Chemistry Questions

For the universe, ΔS is always increasing..right?! if we consider the universe as a system, what will be its surrounding????? moreover is the expansion of universe a adiabatic expansion???? ...

write all possible isomers for C4H10O including all ethers and Alcohols (only structural isomers). Please....!! ...

which is correct and why? *Image* ...

what is this "VIRIAL EQUATION"????? i cant make head or tail ;-( please explain what this eqn mean Z=1+ B/Vm + C/Vm2 + D/Vm3 ........... ...

Q:3A complex of Zn has the formula [Zn(NH3)x]Cl2 and on reaction with HCl forms NH+4 ions as : [Zn(NH3)x]Cl2+HCl → Zn2+ + NH+4+Cl- 1.02 g complex was treated with HCl and at the end point solution was treated with excess of ...

Q:4 To determine the molar mass of a solid monoprotic acid ,a student titrated a weighted sample of the acid with standardized aqueous NaOH. Which of the following could explain why the student obtained a molar mass that was ...

0.85 gram of saturated hydrocarbon is burnt completely in excess ofO2 gas and all CO2(g) evolved were absorbed in 100ml of NaOH solution. The solution was then separated into two equal parts by volume. One part of the solutio ...

Q:1 A one gram sample containing NaOH as the only basic substance and some inert impurity was left exposed for a very long time so that part of NaOH got converted into Na2CO3 by absorbing CO2 from the atmosphere . The resulti ...

If the boiling point of a certain compound is elevated what will be the change in its freezing point? ...

Expand this bond line formula to show all the atoms including carbon and hydrogen *Image* please explain your work. thanks in advance ...

In Arihant, it says that stability of carbocations is in the order: benzylic>allylic>3°>2°>1°>-CH3 While in Morrison Boyd, Solomons and BT, it is given 3°>benzylic,allylic,2°>1°>-CH3 which one is ...

Dehydration of 2,2,3,4,4-pentamethyl-3-pentanol gave two alkenes A & B. the ozonolysis products of A & B are : *Image* xplain it plz.. ...

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*Image* The no. of compounds that are soluble in aq. NaOH is ans. 4 why isn't the 3rd compound also counted??? ...

The hybridization of Ni(CO)4 and Cr(H2O)62+, respectively are: Solution: It is sp3 and sp3d2, but none of the option matches. I have verified this from many sources. ...

*Image* Kindly tell the product please. ...

Compare the ratio of rates of diffusion of the following two: Container-1: Volume=1 L, Temperature=300K, 1 moles of CO2 + 2 moles of H2 container-2: Volume=1 L, Temperature=300K, 1.5 moles of He ...

Q:1. How many product(s) are obtained : *Image* Q:2: Give the product : *Image* Q:3: No. of products are what are they: *Image* ...

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Why is it that alkanes lower than hexane cannot be sulphonated? ...

what happens when acetic anhydride reacts with phenol in presence of a base? ...

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q) The reaction given below, involving the gases is observed to be first order with rate constant 7.48 x 10-3 sec-1. Calculate the time required for the total pressure in the system containing A at an initial pressure of 0.1 ...

formation of olefins from alkalis and alkyl halides--- what kind of a reaction is it?? is it sn1, sn2, e1 or e2? ...

1) why is it so that many endothermic reactions that are not spontaneous at room temperature become spontaneous at high temperature? ...

calculate the final molarity of : 200 ml 1 M HCl +100ml .5M H2SO4 ...

Q1) Why do we say ΔS = Qrev/T Q2) While finding direction of spontaneity for a reaction, we say ΔSsurroundings = Qsurrounding/T = -Qsystem/T ΔSsurroundings = -ΔHsystem/T ΔSuniverse = ΔSsystem- ΔHsystem/T and further we ...