Recent content by Dr Uma Sharma

It is actually based on reduction/oxidation potentials of these metals which also depends on their hydration enthalpy.

I think x is the mass of the hydrate and you need to calculate first the number of moles to work out the volume.

How can you predict the sign of delta G only by counting moles on the reactant side and product side?

You can talk about instantaneous reactions but still time is needed may be very very small faction of it.

It is the overall stability of all species on the product side which will determine the spontaneity of the reaction.Ions or charged particles are always dominating species so their stability factor will matter most.

You can try using an example like CO2 Check mass fraction of C with total mass in one mole of CO2 and then check moles of carbon in total moles of the elements in one mole of CO2.

2CO2 + 2H+ + 2e- = H2C24 (electrode potential is -0.49V)

what is Ksp of AgCl ? it is the ionic product of [Ag+ ] and [Cl-] .These are the concentration of ions in solution and solution means solute (AgCl) and solvent( water here).It is not that AgCl is completely insoluble, its very low Ksp indicates that it is very less soluble.It means volume of...

It is clearly written that it is methane mixed with air (1 atm is an indication of air) so it is 16 parts by mass of methane and one part by mass air (at 1 atm and 298K). Use information that density of air is 1.2754 g./L (at 298K )to calculate the mass of each component of gas with its...

you take any ratio ...answer should be same If you take R1/R3 then [A] is canceled and if you do R3 and R1 then plug in the conc of A with raise to power of its order .. it should give us the same answer ...

A solvent should also not react with the compounds ... Alcohols react with acids to form esters ...that can also be one of the reason.

Esters have very high tendency to react with water and go for the reverse reaction ...so when preparing esters you must have some method to keep removing water so that you can get more ester as product.

As IUPAC Rule First is always Cation and then anion In your example cation is a complex and anion is Cl- triammineaquadihydroxochromium(III) ...Now here first write the Transition metal (Cr) ,then anionic ligand (2OH-) and then neutral ligand alphabetically (first H2O and then NH3 ) a So The...

some how I thought it as a typo error on this forum ...I thought you are asking why they did not use per day in the unit.

We have different theories to explain how elements reacting to form molecules ..means about chemical bonding ... very first is based on octet rule ...second is based on VSEPR ...which helps in understanding many things about shapes, angles etc. more sophisticated theories are Valence bond...