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What is the formula for copper (l) sulfide?

Answer 1

#"Copper(I) sulfide"-="cuprous sulfide"-=Cu_2S#

Copper metal can access two common oxidation states, i.e. #Cu^+# or #Cu^(2+)#:

#underbrace(Cu_2S)_"copper(I) sulfide or cuprous sulfide"#;

#underbrace(CuS)_"copper(II) sulfide or cupric sulfide"#.

Both salts, like the majority of sulfide salts, are poorly characterized and would dissolve in aqueous solution like bricks.

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Answer 2

Avery Adams

Copper(I) sulfide has the chemical formula Cu2S.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.