CWEA LABORATORY ANALYST
EXAM ALL GRADES 2025/2026
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,Terms in this set (169)
- Major anion found in many
Chloride natural waters
- Can impart salty taste in H2O
What increases Chloride in human diet and
concentration softeners flushed into sanitary
of chloride in sewer system
wastewater
2 most argentometric and mercuric nitrate
prevalent
methods of
measuring
chloride
Titration of sample with standard
solution of silver nitrate (AgNO3)
Argentometric - Indicator: Chromate ions (CrO4)
- End point: reddish silver
chromate
, Titration with standard mercuric
nitrate solution
-pH must be adjusted between 2.3
Mercuric
and 2.8
Nitrate
- Indicator: Diphenyl carbazone
- End point: Change from blue to
purple in presence of mercury
Interference of Sulfide, bromide, orthophosphate
Mercuric (over 30 ppm), and iodide
Nitrate Method
Presence of decaying vegetable
Why does color
matter, metal ions (ie. iron) or
change in water
industrial and domestic pollution
How is color Measured using visual comparison
measured method
Sample compared to standards
Visual using matched nessler tubes
comparison - Standards prepared with solution
method containing cholorplatinate and
cobaltous chloride
Standard units One unit= color resulting from 1 mg
for color of platinum/L
EXAM ALL GRADES 2025/2026
BANK | ACCURATE REAL EXAM
VERSIONS | CURRENTLY TESTING
WITH A STUDY GUIDE
Save
Sample some practice questions
Learn
Studied 7 terms
Nice work, you're crushing it
Continue studying in Learn
,Terms in this set (169)
- Major anion found in many
Chloride natural waters
- Can impart salty taste in H2O
What increases Chloride in human diet and
concentration softeners flushed into sanitary
of chloride in sewer system
wastewater
2 most argentometric and mercuric nitrate
prevalent
methods of
measuring
chloride
Titration of sample with standard
solution of silver nitrate (AgNO3)
Argentometric - Indicator: Chromate ions (CrO4)
- End point: reddish silver
chromate
, Titration with standard mercuric
nitrate solution
-pH must be adjusted between 2.3
Mercuric
and 2.8
Nitrate
- Indicator: Diphenyl carbazone
- End point: Change from blue to
purple in presence of mercury
Interference of Sulfide, bromide, orthophosphate
Mercuric (over 30 ppm), and iodide
Nitrate Method
Presence of decaying vegetable
Why does color
matter, metal ions (ie. iron) or
change in water
industrial and domestic pollution
How is color Measured using visual comparison
measured method
Sample compared to standards
Visual using matched nessler tubes
comparison - Standards prepared with solution
method containing cholorplatinate and
cobaltous chloride
Standard units One unit= color resulting from 1 mg
for color of platinum/L
