Water quality Alkalinity.pptx

Multiple Select

Alkalinity is a measure of which two species in the water?

• CO3 -2

• HCO3 -

• H+

• OH-

Multiple Choice

Why is pH important in Aquatic Ecosystems?

• It affects the health of aquatic life

• It determines water temperature

• It influences water clarity

• It has no effect on ecosystems

Multiple Choice

According to the diagram, which of the following best describes bleach?

• Strong acid

• Weak acid

• Strong base

• Weak base

Multiple Choice

What is the preferred pH range for most organisms according to the image?

• 3-5

• 5-9

• 7-10

• 10-12

Multiple Choice

Acid rain can:

• cause nutrient leaching

• change the acidity of the soil

• destroy monuments

• all of the above

Multiple Choice

What are the main sources of atmospheric acid that contribute to acid rain formation?

• Industry

• Transport

• Domestic

• Electricity generation

Multiple Choice

What is the ability of a water body to resist acidification called?

• Alkalinity

• Acidity

• Salinity

• Turbidity

Multiple Choice

What happens when CO3^2- absorbs one H+?

• It becomes HCO3^-

• It becomes H2CO3

• It decreases the pH

• It increases acidity

Multiple Choice

What is the relationship between alkalinity and acidification in water bodies?

• High alkalinity prevents acidification

• Low alkalinity prevents acidification

• Alkalinity has no effect on acidification

• Alkalinity increases acidification

Multiple Choice

What are the effects of acid rain on high alkalinity and low alkalinity lakes?

• High alkalinity lakes remain unharmed

• Low alkalinity lakes thrive

• High alkalinity lakes have a pH below 7

• Low alkalinity lakes have aquatic life that can reproduce

Poll

How confident do you feel about this topic now?

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• Somewhat confident
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