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Anna007 [38]
3 years ago
8

What is the error? NH4OH (aq) + KOH (aq) --> KOH (aq) + NH4OH (aq)

Chemistry
1 answer:
dexar [7]3 years ago
6 0

Answer:

  • <u>There is not a chemical reaction. This is just the dissolution of two ionic compounds that remain dissolved in solution, without reacting.</u>

Explanation:

The issue here is that none chemical reaction is happening.

The two compounds mixed are ionic bases: both of them dissociate in water producing OH⁻ ions:

  • NH₄OH (aq) → NH₄⁺(aq) + OH⁻(aq)

  • KOH (aq) → K⁺(aq) + OH⁻(aq)

Then, when you write the total ionic equation you have:

NH₄⁺(aq) + OH⁻(aq) +  K⁺(aq) + OH⁻(aq) →

                                                   NH₄⁺(aq) + OH⁻(aq) +  K⁺(aq) + OH⁻(aq)

Look at the species on the reactant side and the product side: the same ions are found on both sides.

That means that all of them are spectator ions: they are just dissolved, and remain in water (aqueous solution) without reacting. None new different compound is formed.

The net ionic equation would not have any species because the spectator ions get canceled.

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Explanation:

Bromine is a chemical element with the symbol Br and atomic number 35. It is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured vapour. Its properties are intermediate between those of chlorine and iodine. Isolated independently by two chemists, Carl Jacob Löwig (in 1825) and Antoine Jérôme Balard (in 1826), its name was derived from the Ancient Greek βρῶμος ("stench"), referring to its sharp and disagreeable smell.

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Answer: 10.9 mol.

Explanation:

  • To understand how to solve this problem, we must mention the reaction equation where water produced from PbO₂.

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  • Now, it is a stichiometric oriented problem, that 1 mole of PbO₂ produces 2 moles of H₂O.

Using cross multiplication:

1.0 mole of PbO₂ → 2.0 moles of H₂O

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The moles of water produced = (5.43 x 2.0) = 10.86 moles ≅ 10.9 moles.

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