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Answer part A or part B - Leaving Cert Chemistry - Question k - 2019
Question k
Answer part A or part B. A. Which two substances in the following list make rain water acidic? CO CO₂ O₁ CFC (chlorofluorocarbon) SO₂ or B. Which two metals i... show full transcript
Worked Solution & Example Answer:Answer part A or part B - Leaving Cert Chemistry - Question k - 2019
Step 1
A. Which two substances in the following list make rain water acidic?
Answer
The two substances that make rain water acidic are Carbon Dioxide (CO₂) and Sulfur Dioxide (SO₂). When these gases dissolve in rainwater, they form weak acids: carbonic acid from CO₂ and sulfurous acid from SO₂. These reactions contribute to the acidity of rainwater.
Step 2
B. Which two metals in the following list are transition elements?
Answer
The two metals that are transition elements are Iron (Fe) and Copper (Cu). Transition elements are characterized by their ability to form variable oxidation states and use d-orbitals in bonding. Iron is found in Group 8 and Copper in Group 11 of the periodic table.