When concentrated sulfuric acid reacts with sodium iodide the products include sulfur, iodine, hydrogen sulfide and sulfur dioxide. Which statement is correct?
A.
Hydrogen sulfide is the product of a reduction reaction.
B.
lodide ions are stronger oxidising agents than sulfate ions.
C.
Sulfur atoms from the sulfuric acid are both oxidised and reduced.
D.
Sulfur atoms from the sulfuric acid are oxidised to make sulfur dioxide.
Exam No：9701_s17_qp_11 Year：2017 Question No：17
Answer:
A
Knowledge points:
12.1.1 explain the lack of reactivity of nitrogen, with reference to triple bond strength and lack of polarity
12.1.2.1 the basicity of ammonia, using the Brønsted–Lowry theory
12.1.2.2 the structure of the ammonium ion and its formation by an acid–base reaction
12.1.2.3 the displacement of ammonia from ammonium salts by an acid–base reaction
12.1.3 state and explain the natural and man-made occurrences of oxides of nitrogen and their catalytic removal from the exhaust gases of internal combustion engines
12.1.4 understand that atmospheric oxides of nitrogen (NO) can react with unburned hydrocarbons to form peroxyacetyl nitrate, PAN, which is a component of photochemical smog
12.1.5 describe the role of NO in the formation of acid rain both directly and in their catalytic role in the oxidation of atmospheric sulfur dioxide
Solution:
Download APP for more features
1. Tons of answers.
2. Smarter Al tools enhance your learning journey.
IOS
Download
Download
Android
Download
Download
Google Play
Download
Download