Which of the formulae below is the correct chemical formula for copper (I) cyanide?Group of answer choices(a) CoCN(b) Co2CN(c) CuCN(d) CuCN2(e) Cu2CN
Question
Which of the formulae below is the correct chemical formula for copper (I) cyanide?Group of answer choices(a) CoCN(b) Co2CN(c) CuCN(d) CuCN2(e) Cu2CN
Solution
The correct chemical formula for copper (I) cyanide is (c) CuCN.
Here's why:
- Copper (I) indicates that copper has a charge of +1.
- Cyanide is a polyatomic ion with a charge of -1 (its formula is CN-).
- In a neutral compound, the total charges from the cation (positive ion) and anion (negative ion) must balance out to zero.
- Therefore, one +1 copper ion (Cu+) can balance out one -1 cyanide ion (CN-), giving us the formula CuCN.
So, the correct answer is (c) CuCN.
Similar Questions
What is the correct formula for copper(II) oxide?Group of answer choicesCuO2Cu2OCuO2CuO2CO2
Which one of the following combinations of names and formulas of ions is incorrect?Group of answer choicesCN- cyanideS2- sulfate Ba2+ bariumClO4- perchlorate
Which one of the following has its name and chemical formula correctly matched?*1 pointHClO3 hydrochloric acidHClO hypochloic acidHCl chloric acidNaClO3 sodium chlorideCuClO2 copper (I) chlorite
All of the following are named correctly EXCEPTGroup of answer choices(a) NiCl2.6H2O ; nickel(II) chloride hexahydrate.(b) MnO2 ; manganese(IV) oxide.(c) TiCl4 ; titanium(IV) chloride.(d) CuI ; copper(II) iodide.(e) ZnSO4; zinc(II) sulfate.
Which of the following represents an incorrect chemical formula of a compound?(A) Al P (B) CaS(C) ZnO (D) MgN
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.