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vodomira [7]
3 years ago
15

Why is cyanide ion negatively charged?

Chemistry
1 answer:
Bogdan [553]3 years ago
8 0
The cyanide is CN^{-}
A carbon atom has 4 valance electrons and nitrogen has 5. Below is a Lewis-dot-structure of cyanide.
:N≡C.
The carbon atom is still one electron short of having a full octet and so it will seize another electron from almost anything, making the cyanide ion negative and whatever it took the electron from it now positive.
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Answer:

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Sulfur, or 32.065 grams.

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Find the equilibrium constant for the reaction cr(s) + zn2+(aq) → cr2+(aq) + zn(s) if the standard cell emf is −0.76 v at the ca
diamong [38]

<u>Given:</u>

E⁰cathode = -0.76 V

E⁰anode = -0.91 V

<u>To determine:</u>

The equilibrium constant K for the reaction-

Cr(s) + Zn2+ (aq) ↔ Cr2+(aq) + Zn(s)

<u>Explanation:</u>

The relation between, E⁰cell and Keq is-

E⁰cell = (0.0592/n) log(Keq)

E⁰cell = E⁰cathode-E⁰anode = -0.76-(-0.91) = 0.15 V

n = # electrons in the reaction = 2

0.15 = (0.0592/2) * logKeq

logKeq = 5.07

Keq = 10⁵.⁰⁷ = 1.17*10⁵

Ans: the equilibrium constant is 1.17*10⁵


5 0
3 years ago
If you had excess chlorine, how many moles of of aluminum chloride could be produced from 28.0 g of aluminum?
Flauer [41]
<span>Answer: 2Al(s) + 3Cl2(g) ---> 2AlCl3(s) Always work in moles moles = mass of substane / molar mass 2Al (s) + 3Cl (g) --> 2AlCl3 (s) moles Al = 23.0 g / 26.98 g/mol = 0.852 moles Al</span>
5 0
3 years ago
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