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what is hardy schulze rule ?
difference between inhibitors and promoters...
what is dispersed phase and dispersed medium
Adsorption is accompanied by : also explain
decrease in enthalpy of the system
increase in entropy of the system
increase in free energy of the system
increase in both enthalpy and entropy
explain tyndall effect more deeply
Give an example of protective colloid.
what is magneson reagent, what is its chemical formula and name ?
Lyophilic sols are more stable den lyophobic sols. Why???
what is the difference between partial hydrolysis and complete hydrolysis?
Why is it generally preferable to use absorbance as a measure of absorption rather than % Transmittance?
Because %T is dependant on the power of the incident radiation
Because absorbance is proportional to the concentration of the analyte, whereas %T is not.
Because %T cannot be measured as accurately as absorbance
None of these are correct
what happens when glucose is treated with bromine water ??
which of the following electrolytes is most effective for the coagulation of Fe(OH)3 sol and why?
Q3. Differentiate between peptization and coagulation.
what is Bredig's Arc method?
difference between physisorption and chemisorption
which of the following is most effective in coagulation of As2S3 sol?
Na3PO4, MgCl2, CaCl2, AlCl3
what is haber's process????????
What is bulk phase?
What is shape selective
Distinguish between Freundlich adsorption isotherm and Langmuir adsorption isotherm also by plotting graphs?
I can't understand that when AgNO3 Is added to KI solution ,ppt. adsorbes I- ions leading to the formation of negatively charged colloidal solution ,but when KI is added to same AgNO3 solution ,then adsorption of Ag+ ion takes place ,why not I- get adsorbed in this case also?Kindly explain
wht is preferential adsorption of colloidal sol?explain
which get adsorbed easily on charcoal?(NH3 or CO2)
Explain what is
(i) When a beam
of light is passed through a colloidal sol.
electrolyte, NaCl is added to hydrated ferric oxide sol.
current is passed through a colloidal sol?
difference between activators, inhibitors, promoters and co-enzymes.
For hydrogenation, catalytic activity increases from Group 5-11. It's also mentioned that the activity is maximum for groups 7-9. So, Is the activity higher in group 11 or in group 9?
explain the relation between conductivity and molar conductivity of a solution?
How adsorption is an exothermic reaction..???
At high pressure, the entire metal surface gets covered by a mono molecular layer of the gas. What is the order of the process
what causes brownian movement in a colloidal solution?
why solid solid is called sol and gas solid is also called sol???
More easily liquefiable gases are adsorbed readily.
Please explain the reason for the above phenomenon.
If FeCl3 is added to excess of hot water, a postively charged sol of hydrated ferric oxide is formed due to adsorption of Fe3+ ions. However, when ferric chloride is added to NaOH, a negatively charged sol is obtained with adsorption of OH- ions. Why is there such a difference? Explain in detail.
Why is gelatine is added to ice-creams?
what will happen if a beam of light is passed through nacl and then through a sol?
what is observed when an emulsion is subjected high speed centrifugation?
what is the composition of copper matte?
Is the statement true-The adsorbed hydrogen is more active than ordinary hydrogen.
Why does physisorption decrease with increase in temperature?
GIVE REASONS FOR THE FOLLOWING
A) colloids stabilize due to brownian movement.
B) cottrell's smoke precipitator is fitted at the mouth of chimney used in factories.
C) colloidal gold is used for intramuscular injection
how many chiral carbon atoms are there in1-chloro-2,5-dimethyl chlorohexane?
explain :same substance can act both as colloids and crystalloids.(1 mark) ..... i've already seen the existing ans but not satisfied.
how can the ultrafiltration process of colloidal solution be made faster?
examples of lyophilic lyophobic sols
why hydrophobic sols are easily coagulated?
A lump of coal burns at a moderate rate in air while coal dust burns explosively.why?
is it necessary to remove CO when ammonia is obtained by Haber’s
Comment on the statement colloid is not a substance but only state of substance.
What is the difference between double displacement and double decomposition reactions? Or are they the same?
what is the effect of pressure in adsorption?
What is an adsorption
isotherm? Describe Freundlich adsorption isotherm.
The charge on the sol particles is due to one or more reasons, viz., due to electron capture by sol particles during electrodispersion of metals, due to preferential adsorption of ions from solutions and/or due to formulation of electrical double layer. Please explain me the meaning of the 'bold' lines.
what is platinised asbestos???????????????
what do we mean by activity n desorption??????????????/// pls help............
what is flocculating ion
adsortion ,absorption,sorption is exothermic or endothermic.........n explain y is it ?
Explain the formation of delta.
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