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Keith_Richards [23]
3 years ago
10

whats the balanced chemical equation for Solid potassium iodide decomposes into solid potassium and iodine gas

Chemistry
1 answer:
d1i1m1o1n [39]3 years ago
7 0

Answer:

Solid potassium iodide decomposes into solid potassium and iodide gas.

Explanation:

The answer given has a subscript "2" on the iodine at the start of the equation. Why is the 2 there as a subscript?

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Ans: B . 1 mole of gas

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Part 1: Name the type of chemical reaction that occurs when calcium hydroxide (Ca(OH)2) reacts with nitric acid (HNO3).
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<u>Answer:</u>

<u>For 1:</u> Neutralization reaction

<u>For 2: </u>Zinc is more reactive than lead and less reactive than calcium.

<u>Explanation:</u>

  • <u>For (1):</u>

When a base reacts with an acid to form a salt and water molecule, it is known as a neutralization reaction. The general equation follows:

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  • <u>For (2):</u>

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From the reactivity series below,

Zinc lies above in the series than lead thus is more reactive and will easily replace lead from its aqueous solution.

While zinc lies below in the series than calcium thus is less reactive and will not easily replace calcium from its aqueous solution.

Zn(s)+Pb(NO_3)_2(aq)\rightarrow Zn(NO_3)_2(aq)+Pb(s)

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A saturated solution can become supersaturated when it is cooled. The solubility of solid solutes in liquid solvents increases as the solvent is warmed up. For example, you can dissolve more sugar in warm water as opposed to cold water.

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2 years ago
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