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WorksheetsAcidic Seas Group 6 Assessment
Total questions: 15
Worksheet time: 5mins
According to ______ principle, if additional CO2 (aq) is added into this system, which direction would the equilibrium shift?
Le Chatelier’s; Left
Le Chatelier's; Right
Brønsted–Lowry; Left
Brønsted–Lowry; Right
Adding more CO2 from our atmosphere _________ the amount of hydrogen ions and contributes to __________ the pH of the ocean.
Decreases: raising
Decreases; lowering
Increases; lowering
Increases; raising
The burning of fossil fuels released in the atmosphere increases the earth’s atmospheric temperature through the trapping of these gasses such as CO2 which also…
Increases the ocean’s temperature and lowers the ocean’s pH levels.
Decreases the ocean's temperature and lowers the ocean's pH levels.
Increases the ocean's temperature and raises the ocean's pH
Decreases the ocean's temperature and raises the ocean's pH
Has no effect on the ocean's temperature of ocean's pH
What is the minimum degree that most oceanographers and marine biologists typically need?
Master's degree
Bachelors degree
Graduation degree
No degree needed
The pH of the ocean has dropped from ____ to ____.
3.2; 3.1
8.1; 8.2
3.1; 3.2
8.2; 8.1
How is ocean acidification harmful to humans?
Coral reefs are strengthened causing weaker waves between the reef and the shores; additionally, many countries make a profit off of fish which are also helped in the process
Coral reefs are damaged causing stronger waves between the reef and the shores; additionally, many countries make profit off fish which are also harmed in the process.
Ocean acidification is not harmful to humans because humans live on land.
As future rising scientists pursue this career, what factors would they have to consider and understand to address these problems?
They will need to understand how pollution, warming, and ocean acidification affect marine life and come up with ways to reduce atmospheric carbon dioxide and its impact on the oceans.
They will need to understand the phases of the moon and how it affects the tides of the ocean.
(T/F) ”When water becomes too warm, corals can become stressed, and they expel the symbiotic algae living in their tissues”
True
False
Dissolved carbon dioxide reacts with water to form carbonic acid which dissociates into ____ and ____
Hydrogen ions; bicarbonate ions
hydroxide ions; and acetate ions
Carbon dioxide does not react with water
About _____ of CO2 found in seawater is dissolved CO2, and ____ of the CO2 concentration is located in the bicarbonate ion.
89.5%; 0.5%
0.5%; 89.5%
0.9%; 81.1%
81.1%; 0.9%
(T/F)
Calcium ions and hydrogen carbonate react in the ocean to form a calcium carbonate precipitate with a byproduct of carbon dioxide and water.
True
False
(T/F) H2CO3 is a weak acid, so H2CO3 has a relatively large Ka value.
True
False
What is the conjugate base of the bicarbonate ion?
H2O
HCO3 -
CO3 2-
H3O +
Which of the following is a conjugate acid/base pair?
H3O+ / OH-
Na+ / Cl–
NH2 /NH4+
H2CO3 / HCO3–
(T/F); Increasing the concentration of H+ ions in the atmosphere subsequently increases the pH of the ocean.
True
False
