Acidity and alkalinity - chemical characteristics of water, Civil Engineering

Assignment Help:

Acidity and Alkalinity - Chemical Characteristics of Water

Acidity:

Capacity to neutralize bases and is a measure of acids in water. Acidity is measured by titrating the sample using a standard base solution to raise to a pH of 8.3

Alkalinity:

Ability of water to neutralize acids, caused mainly by bicarbonate, carbonate and hydroxyl ions.  

Alkalinity (eq/m3)  = HCO3-, bicarbonate (eq/ m3) + CO3-2, carbonate (eq/ m3)  + OH-, hydroxyl (eq/ m3) - H+, hydrogen (eq/ m3)  

For all practical purposes the last two terms can be ignored for natural water samples. Even carbonate concentrations are very low in the natural pH range thus leaving mainly bicarbonate as the cause of alkalinity.   

Convert alkalinity from eq/m3 into mg/l as CaCO3 by multiplying with 50 (EW of CaCO3)

Alkalinity is measured by titrating the sample with a standard acid to a pH of 4.5.


Related Discussions:- Acidity and alkalinity - chemical characteristics of water

Verify the net allowable bearing pressure, A 1.8 m square column is founded...

A 1.8 m square column is founded at a depth of 1.8 m in sand, for which the accurate N-value is 24. The water table is at a detph of 2.7 m. Verify the net allowable bearing pres

Harbour, typical layout showing dock,quay.jetties,turning circle,pier

typical layout showing dock,quay.jetties,turning circle,pier

Define unit hydrograph - hydrology, Define Unit Hydrograph UNIT HYDROGR...

Define Unit Hydrograph UNIT HYDROGRAPH: The hydrograph developed for a drainage basin (watershed) from the runoff of a 1 in or 1 cm storm. It is the base hydrograph from which

Theory of structure, whatismeanby shear force and bending moment

whatismeanby shear force and bending moment

Method of observation by satellite, Q. Method of observation by satellite? ...

Q. Method of observation by satellite? The difference between a photographs and imageries needs to be understood first. A photograph covers a specific area within its view and

Resultant pull, two locomotive moving on opposite bank of a canal can pull ...

two locomotive moving on opposite bank of a canal can pull a vessal parallel to the banks by the means of two rope.the force in the ropes are 20kN and 24kN while the total angle be

Role of rebate in typical construction joint, Question What is role of reba...

Question What is role of rebate in typical construction joint ? Answer Construction joints are formed on sites to facilitate construction procedure. Though, if improperly constr

What is the unit weight of water, In a pipette analysis, 0.5 N of dry soil ...

In a pipette analysis, 0.5 N of dry soil (fine fraction) of specific gravity 2.72 were mixed in water to form half a litre of uniform suspension. A pipette of 10 ml capacity was

Define the statements about error analysis, Define the statements about err...

Define the statements about error analysis? I.  The expected value (or: most likely; probable value) of a measurement is the value that has the highest value of being correct.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd