Chemistry
Which of the following statements is/are correct with respect to the figure shown alongside?
P — A is HCl, B is iron.
Q — A is Cl2, B is copper.
R — A is Cl2, B is iron.
Only P
Only Q
Only R
Both P and R
Chemical Reaction
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Answer
Only R
Reason — When chlorine gas (Gas A) is passed over heated iron (Compound B), it forms Iron(III) chloride, which is brown in color.
Whereas hydrochloric acid (HCl) will not produce the same reaction, and copper reacting with chlorine gas will produce copper(II) chloride, which is typically green or blue-green, not brown.
Hence A is chlorine gas and B is iron.
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