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. Ca+2 = 20 ppm, Mg+2 = 25 ppm, CO2 = 30 ppm, HCO-3 = 150, K+ = 10 ppm. Calculate the lime (87% pure) and soda (91% pure) required softening 1 million litters of water sample.
Ans.
Calculation of CaCO3 equivalent of given impurities:
S.NO
substances
Amount of substances in mg/L
Multiplication factor
CaCO3 equivalent mg/L
1.
Ca++
20 ppm
100/40
100/40*20 =50
2.
Mg++
25 ppm
100/24
100/24*25 = 104.16
3.
CO2
30 ppm
100/44
100/44*30 = 68.181
4.
HCO-3
150 ppm
100/122
100/122*150 = 122.95
5.
K+
10 ppm
Not produce hardness
Lime required:
74/100[Mg++ + CO2 + HCO-3 as CaCO3 equivalent] mg/L *Volume of water*100/%purity
74/100[104.16 + 68.181 + 122.95] mg/L*1000000l*100/86
74/100[295.29] mg/L * 100000*100/87
= 251.16*106 mg
= 251.16*106 mg*1Kg/106
= 251.16
Soda required = 106/100[50 + 104.16 – 122.95] mg/L *1000000*100/91
= 100/106[31.21] mg/L*106*100/91
= 36.35*106 mg
= 36.35*106 mg*1Kg/106
= 36.35Kg
Q. Significant figures of the number of digits? Significant figures of the number of digits reported in a measurement signify how precise the measurement is. The further di
i want some easy reactions of complexometric titration for my assignment......
For liquids - Drying of Organic Substances Organic liquids are usually dried by keeping them over night in contact along with a dehydrating (desiccating) agent that does not re
Permanganate titrations - Oxidation reduction titrations These are titrations where potassium permanganate is utilized as an oxidising agent in acidic medium. The medium is org
When a result of barium nitrate and a solution of copper(II) sulphate are mixed a chemical reaction produces solid barium sulphate which sinks to the bottom and a solution of coppe
what is the diagonol relationship of lithium and magnesium
Explain indoctomeric effect with example of nitro compound?
Write a program called tarc that performs much of the cf operation of tar .The command arguments look like: If there are no ar guments, tarc reports an error and e xits. If ther
The difference among Threshold energy and average energy of the molecules is known as activation energy.
hittorf rule
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