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.
The laboratory production of sulphuric acid involves the catalysed oxidation of sulphur in oxygen, followed by the separation of the resulting sulphur trioxide (SO 3 ) from sulphur
Q. What are the requirements of drinking water? Explain various methods used for the sterilization of water for municipal supply. ANS. Requirements of drinking water: The e
determination of transport number by hittorfs method.
how many mole ratios can be obtained from the following equation? Na2S+Cd(NO3)2-2NaNo3+CdS
Q. What is structural formula and how to write it? Ans. To represent an organic molecule, a structural formula is often used. As a structural formula shows how the atoms i
Draw C5H10O2 that has the following 1H NMR spectrum: 1.15 (t, 3 H), 1.25 (t, 3 H), 2.33 (q, 2 H), 4.13 (q, 2 H).
Synthesis of phenothrine
hnhvhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.
Q. Define Egg foam stability? The two factors of utmost importance in egg white foams are stability and volume. Several factors influence one or both of these characteristics
what organic compounds can be separated by simple distillation
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