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Yuri [45]
3 years ago
15

Pls helps asap plsssssss

Chemistry
2 answers:
nata0808 [166]3 years ago
6 0

Answer:

D. An ion that is not directly involved in the reaction.

Explanation:

Spectator ions are ions that are not directly involved in a chemical reaction. They are commonly seen in complete ionic equations and are often taken out to make a net ionic equation because the ions aren't involved in forming the precipitate.

  • Complete ionic equation: Gives all the ions participated in the chemical reaction, even spectator ions.
  • Net ionic equation: Leaves out spectator ions so the equation only shows the ions that formed the precipitate.

For example, this is very useful when dealing with redox reactions because are complicated enough without spectator ions being in the way, so they help focus on those ions that actually form the precipitate.

Lisa [10]3 years ago
4 0

Answer:

A spectator ion refers to a charged atom in a chemical reaction that does not undergo a chemical change.

Hope this helps!!!

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The formula for a compound of Li+ ions and Br- ions is written LiBr. Why can’t it be written Li2Br? Why isn’t it written BrLi?
maksim [4K]

Lithium has charge of +1 and bromide has charge of - 1. So they combine to form the compound lithium bromide which is expressed as LiBr.

<h3><u>Explanation:</u></h3>

Lithium is an alkali metal placed in group 1 or periodic table. It has a valency of 1 which is achieved as lithium loses an electron to achieve a charge of +1.

Bromine is a halogen which is placed in group 17 of periodic table. It has a valency of 1 which is achieved as bromine looses an election to achieve a charge of - 1.

Lithium is the cation and bromide is the anion. So lithium is written in front and bromine following the cation. And as both of their valencies are 1, so they form the compound LiBr.

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A. property is a characteristic of a pure substance that can be observed without changing the substance into some thing else
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