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Jimrockky asked a question
Subject: Chemistry, asked on on 17/10/13

please explain the mechanism of micelle formation with suitable examples.
Piyu Kakani & 1 other asked a question
Subject: Chemistry, asked on on 3/7/17
Density of gold is 19 gm / cm3 . If 1.9x10-4 of gold is dispersed in 1 liter of water to give a sol having spherical gold particles of radius 10nm, then the number of gold particles per mm3 of the sol will be.
Ann asked a question
Subject: Chemistry, asked on on 3/1/15
Explain what is observed when

a) The size of the finest gold sol particles increases in the gold sol.
b) Two oppositely charged sols are mixed in almost equal proportions
Sonal Pattanaik asked a question
Subject: Chemistry, asked on on 11/10/13

Which of the following will have the highest coagulation power for As2S3 colloid?

PO43-

Al3+

SO42-

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    • " jquery1707830165874125743="51" for="question_9_0_0_4"Na+

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    • " jquery1707830165874125743="51" for="question_9_0_0_4"how do we decide that As2S3 forms -vely or +vely charged sol?
    Pranjal Gupta asked a question
    Subject: Chemistry, asked on on 11/11/14

    Why colloidal solution of PALLADIUM can absorb large volume of hydrogen gas ?
    Shibu asked a question
    Subject: Chemistry, asked on on 2/1/14

    Ne gets easily absorbed over charcoal than He. Why ?
    Astha asked a question
    Subject: Chemistry, asked on on 19/4/14

    if x is the amount of adsorbate and m is the amount of adsorbent , which of the following relations is not related to adsorption process ?

    a]x/m = p * T

    b] x/m = f (p) at constant T

    c] x/m = f (T ) at constant p

    d] p =f (T) at constant ( x/m)
    Devashish Katoriya asked a question
    Subject: Chemistry, asked on on 17/5/14

    Q.Why does a gas mixed with another gas not form a colloidal system?

    Kunal Jashnani asked a question
    Subject: Chemistry, asked on on 4/7/14

    Explain line ,"the interface is normall y a few molecules thick but its area depends on the size of the particle s of bulk phases"

    Jyotsna asked a question
    Subject: Chemistry, asked on on 9/8/13

    What is hydrophilic sol? Why are they stable?
    Venkatesh P. asked a question
    Subject: Chemistry, asked on on 30/12/15
    WHy freundlich adsorption isotherm is not valid for high pressures ? explain in detail.
    Shivani asked a question
    Subject: Chemistry, asked on on 1/9/13

    what is free valency of catalyst
    Ann asked a question
    Subject: Chemistry, asked on on 3/1/15
    Why do ferric chloride stop bleeding?? Suggest any other substances which can be used in place of ferric chloride for the same?
    Kunal Jashnani asked a question
    Subject: Chemistry, asked on on 19/8/14

    What is the diffference between activity and rate of reaction .means explain difference between positive catalyst and negative catalyst
    Tejas Mehra asked a question
    Subject: Chemistry, asked on on 1/7/17
    In the experiment on electro Osmosis in which of the following the level of dispersion medium will fall on the cathode side 1)As2S3 2)Fe(OH)3
    Harshitha Naik asked a question
    Subject: Chemistry, asked on on 8/12/13

    why are lyophilic colloids stable and lyophobic unstable? Is it because the former is solvent loving and the latter is solvent hating? Explain.
    Hilon Zd Christa asked a question
    Subject: Chemistry, asked on on 8/6/16
    1. Writ the dispersed phase and dispersion medium of smoke .
    Shivani asked a question
    Subject: Chemistry, asked on on 19/8/13

    A physical adsorption at low temperature may pass into chemisorption as the temperature is increased.

    pls explain this line with examole
    Manavi asked a question
    Subject: Chemistry, asked on on 28/7/16
    Seperation of 'inert gases' is which type of adsorption and why!?
    Shivani asked a question
    Subject: Chemistry, asked on on 19/8/13

    why the extent of adsorption decreases with an increase in temperature in adsorption in solution phase
    Apoorva Saini asked a question
    Subject: Chemistry, asked on on 17/7/14

    explain the hardy schulze rule with a good example
    Pooran Agrawal asked a question
    Subject: Chemistry, asked on on 27/5/14

    physisorption are not specific in nature and reversible in the nature but how pls... explain this
    Chris asked a question
    Subject: Chemistry, asked on on 25/9/16
    Define adsorption with an example. Why is adsorption exothermic in nature? Write the types of adsorption based on the nature of forces between adsorbate and adsorbent.
    Sristi Saijal asked a question
    Subject: Chemistry, asked on on 5/10/14

    how is a sol different from an emulsion
    Pranjal Gupta asked a question
    Subject: Chemistry, asked on on 9/11/14

    What does specific or highly specific in nature means ?
    Pranjal Gupta asked a question
    Subject: Chemistry, asked on on 11/11/14
    Please answer the following questions . Thank you .

    • What is the cause of peptization ?
    • Why the sun looks red at the time of setting ? explain on the basis of colloidial properties .
    Kunal Jashnani asked a question
    Subject: Chemistry, asked on on 19/8/14

    Why charge is present on colloidal particles?Also explain what is electrical double layer ?Explain electrical double layer in very very simple words.
    Agrim Moudgil asked a question
    Subject: Chemistry, asked on on 26/4/15
    What are the application of adsorption in chemical analysis ?
    Supercoool Tiwari asked a question
    Subject: Chemistry, asked on on 4/5/15
    why delta G for adsorption is negative as delta H is negative but delta S is +ve ???
    Yash Aggarwal asked a question
    Subject: Chemistry, asked on on 3/7/14

    Q. Can an adsorption be endothermic? Define clearly and illustrate with examples
    Hilon Zd Christa asked a question
    Subject: Chemistry, asked on on 8/6/16
    1. Write a method by which lyophobic colloids can be saturated .
    Chris asked a question
    Subject: Chemistry, asked on on 25/9/16
    Out of AlCl3 and NaCl, which is more effective in causing coagulation of a negative sol and why?
    Neha Tiwari asked a question
    Subject: Chemistry, asked on on 12/9/17
    50 ml of 1 M oxalic acid is shaken with 0.5 g of charcoal. The final concentration of solution after adsorption is 0.5 M. Calculate the amount of oxalic acid adsorbed per gram of charcoal. Pls explain in detail each step plss...
    Navya Nb asked a question
    Subject: Chemistry, asked on on 10/8/13

    why at higher substrate concentration the enzyme reactions are zero order while at very low concentration of substrate the enzyme catalysed reactions are first order??
    Sonal Gupta asked a question
    Subject: Chemistry, asked on on 21/1/16
    Name an emulsion in which water is the dispersed phase.
    Ann asked a question
    Subject: Chemistry, asked on on 3/1/15
    How does the adsorption of N2 on charcoal with pressure vary at different constant temperatures?
    Shivani asked a question
    Subject: Chemistry, asked on on 19/8/13

    why chemisorptio increases with the increase of temperature and physisorption decrease with inc in temp
    Steffi John asked a question
    Subject: Chemistry, asked on on 30/6/15
    how does tanning be used to prepare leather? or Whats the principle behind hardening of leather?
    Akanksha Reddy asked a question
    Subject: Chemistry, asked on on 10/10/15
    Why adsorption takes place on surface
    Grace George asked a question
    Subject: Chemistry, asked on on 25/2/15
    An example associated colloid.
    Chris asked a question
    Subject: Chemistry, asked on on 25/9/16
    Explain how the phenomenon of adsorption finds application in each of the following processes:  Heterogeneous catalysis
    Sarthak Mahajan asked a question
    Subject: Chemistry, asked on on 9/12/14
    Physisorption decreases with increase in temperature. Give 2 Reasons.
    Shivam Donode asked a question
    Subject: Chemistry, asked on on 13/8/14

    Which of following ion can cause coaguation of protiens?

    1. Ag+
    2. Na+
    3. mg2+
    4. ca2+
    Tannu Jain asked a question
    Subject: Chemistry, asked on on 9/2/15
    In which of the following solvents enol contents will be maximum and why?
    1. water
    2. acetic acid
    3. n-hexane
    4. aq. HCl
    Alok Dubey asked a question
    Subject: Chemistry, asked on on 15/8/14

    define occlusion
    Venkatesh P. asked a question
    Subject: Chemistry, asked on on 8/11/15
    Why tyndall effect is independent of charge on colloidal particles?
    Pranjal Gupta asked a question
    Subject: Chemistry, asked on on 10/11/14

    Why Lyophobic sols are irreversible ?

    Please explain with the help of an example if possible .

    Thank You.
    Venkatesh P. asked a question
    Subject: Chemistry, asked on on 8/11/15
    what's the difference between electro-osmosisand electrophoresis?
    Vineeth Matta asked a question
    Subject: Chemistry, asked on on 19/11/15
    nitrogen gas adsorbed on charcoal to the extent of 0.921 cm3per gm at a pressure of 4.8 atmand at a temperature of 190kbut at 250 k some amount of adsorption was achieved only when pressure was increased to 32 atmwhat is the molar enthalpy of adsorption of nitrogen on charcoal?
    Answer is 12.7 kj per mol use this for ur verification.
    Sarthak Mahajan asked a question
    Subject: Chemistry, asked on on 10/1/15
    Compound A with molecular formula C4HgBr is treated with aq KOH solution. The rate of this reaction depends upon the concentration of A only. When another, optically active active isomer B of this compound was treated with aq. KOH solution, the rate of reaction was found to be dependent upon the concentrationcompound and KOH both.
    1. Write the structural formulae of A and B both.
    2. Which one of these two will be converted to the product with inverted configuration ?
    Akash Singh asked a question
    Subject: Chemistry, asked on on 13/3/15
    can this we said that inHabour's process CO must be removed as H2 can react with CO in presence of catalyst in habour's process
    Grace George asked a question
    Subject: Chemistry, asked on on 2/3/15
    Explain what is observed when
    ( i) Silver nitrate solution is added to potassium ioiodide solution
    (ii) The size of the finest gold Sol particles increases in ththe gold solsol
    (iii) Two oppositely charged sols areare mixed in a almost equal proportions
    Pooran Agrawal asked a question
    Subject: Chemistry, asked on on 27/5/14

    what is electrical disintegration
    Pranjal Gupta asked a question
    Subject: Chemistry, asked on on 11/11/14

    If ADSORPTION is inversely proportional to TEMPERATURE , then why does CHEMISOPTIon is favoured in high temperature ?

    Please solve the quesry as soon as possible .

    Thank you.
    Pranjal Gupta asked a question
    Subject: Chemistry, asked on on 10/11/14

    Physisorption and Chemisorption , both are exothermic processes . Right ?
    Yash Aggarwal asked a question
    Subject: Chemistry, asked on on 3/7/14

    Can you suggest me a project in chemistry on how to reduce smoke from the environment? and procedure for making it easily
    Harsh Mehta asked a question
    Subject: Chemistry, asked on on 23/2/13

    What are the two factors that are responsible for the stability of lyophilic sols?
    Hilon Zd Christa asked a question
    Subject: Chemistry, asked on on 8/6/16
    define sorption
    Deepak Saharan asked a question
    Subject: Chemistry, asked on on 11/8/15
    Bredig's arc method can be used to prepare colloidal solution of which of the following:-
    A) Na
    B) K
    C) Au
    D) Ca
    ELABORATE HOW...
    Sonal Gupta asked a question
    Subject: Chemistry, asked on on 20/1/16
    Please explain the Difference between lather, micelle and scum.
    Faizi asked a question
    Subject: Chemistry, asked on on 26/2/15
    What is the molecularity of Cl---> ½ Cl2(g)?
    Sayali asked a question
    Subject: Chemistry, asked on on 12/4/14

    The process of adsorption is thermodynamically exothermic, which is favoured by lowtemperature. As temperature increases, the extent of adsorption decreases....how??
    Jimrockky asked a question
    Subject: Chemistry, asked on on 17/10/13

    explain the cleansing action of soaps.
    Pankaj asked a question
    Subject: Chemistry, asked on on 1/5/14

    ALUM IS USED AS MODERANT BY DYERS OF CLOTH WHY
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