Question

Which of the compounds, C4H10, BaSO4, Zn(CN)2, Al(OH)3, contain an anion with a -1 charge?

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a C4H10 and Al(OH)3
b Zn(CN)2 and Al(OH)3
C BaSO4, Zn(CN)2, and Al(OH)3
d C4H10, Zn(CN)2, and Al(OH)3
only C4H10

Answer 1

The compounds containing an anion with a -1 charge are Zn(CN)2, which has two CN- ions, and Al(OH)3, which has three OH- ions. The correct answer is option 'b'.

Step-by-step explanation:

The student is asking about which of the given compounds contain an anion with a -1 charge. Looking at the compounds listed:

1. C4H10: This is butane, a hydrocarbon that does not contain any ions, so it does not have an anion with a -1 charge.
2. BaSO4: Barium sulfate consists of the Ba2+ cation and the SO42- sulfate anion, so it does not have an anion with a -1 charge.
3. Zn(CN)2: Zinc cyanide contains the Zn2+ cation and two CN- (cyanide) anions, each with a -1 charge.
4. Al(OH)3: Aluminum hydroxide is made up of the Al3+ cation and three OH- (hydroxide) anions, each with a -1 charge.

Therefore, the compounds containing an anion with a -1 charge are Zn(CN)2 and Al(OH)3. The correct answer is option 'b'.