Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Write phosphate conditioning method for water softening with suitable chemical reactions. How it is different from soda lime method.
Ans.
Phosphate conditioning: In high pressure boilers, scale formation can be avoided by adding sodium phosphate, which reacts with hardness causing substance of water, forming non adherent and easily removable soft sludge of calcium and magnesium phosphates, which can be removed by blow down operation.
3MCl2 + 2Na3PO4 = M3 (PO4)2 + 6NaCl
Where M = Ca+2 or Mg+2
Mainly employed phosphates are:
1. Sodium dehydrogenate phosphate (acidic) Na2HPO4
2. Disodium hydrogen phosphate (weakly acidic) Na2HPO4
3. Trisodium hydrogen phosphate (alkaline) Na3PO4.
Difference between phosphate conditioning and Lime-Soda method
Phosphate conditioning
Lime-soda process
1
This is internal treatment method.
This is external treatment method.
2
It just supplements the L-S process and is not meant to replace L-S.
It has its own importance and is meant that it is necessary.
3
In this appropriate sodium phosphates are added.
Calculated amount of L and S is added.
What is difference among silica used in TLC and HPLC column? Ans) TLC is known as thin layer chromatography. The simple methods works on the principle of adsorption, where as HP
Q. Isolation and purification of metals? metals as a group of elements have acquired a unique importance in the modern world. However, nature' does not generally offer us metal
Determine the physical characteristics and presence of any additives in the given samples of milk. After undertaking this activity, you will be able to: • identify the phy
The phosphate of a metal has the formula MPO4 .The formula of its nitrate will be: (1) MNO 3 (2) M 2 (NO 3 ) 2
K3[Al(C2O4)3]
short note on borazine
In nitromethane N-O bondlength is 1.21A° while normal N-O bondlength is 1.36 A° and for N=O it is 1.18A°..Explain why
Properties of Allyl iodide or 3-iodopropene-1, ICH 2 CH = CH 2 Allyl iodide is a colourless liquid. It get boils at 103.1°C.The halogen atom in allyl iodide is fairly reactive
how to detect nickel radical in presence of Ferro cyanide radical.
A cricket ball of 0.5 kg is moving with a velocity of 100 m/ sec . The wavelength associated with its motion is: (1) 1/ 100cm (2) 6.6 x10 -34 m
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd