Water Analysis (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What does a pH meter measure in water?
What does a pH meter measure in water?
Hydrogen ion () concentration
How does a pH meter generate its reading?
How does a pH meter generate its reading?
Glass electrode creates electric potential
What does atomic absorption spectrometry (AAS) measure in water?
What does atomic absorption spectrometry (AAS) measure in water?
Concentration of specific metal ions
In AAS, what occurs when a water sample is vaporised?
In AAS, what occurs when a water sample is vaporised?
Atoms absorb light at set wavelengths
Which heavy metals can AAS detect in water?
Which heavy metals can AAS detect in water?
Lead, cadmium, mercury
What is a key application of AAS in environmental monitoring?
What is a key application of AAS in environmental monitoring?
Monitoring river and lake metal levels
What does colourimetry measure in water analysis?
What does colourimetry measure in water analysis?
Intensity of colour in the sample
In colourimetry, what is the purpose of adding a reagent?
In colourimetry, what is the purpose of adding a reagent?
Forms a coloured compound
Which substances can colourimetry commonly detect in water?
Which substances can colourimetry commonly detect in water?
Nitrates, phosphates, chlorine
Under what conditions is BOD typically measured?
Under what conditions is BOD typically measured?
5 days at 20°C
What does a high BOD level indicate?
What does a high BOD level indicate?
High organic pollutant concentration
What is the main consequence of high BOD in aquatic environments?
What is the main consequence of high BOD in aquatic environments?
Oxygen depletion endangering life