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3 years ago

Oxidation number of au in kaucl4

Chemistry

2 answers:

scZoUnD [109]3 years ago

8 0

+7 is the correct answer for this.

DanielleElmas [232]3 years ago

3 0

KauCl4 :

K = + 1

au = + 7

Cl = - 2

hope this helps!

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How many moles of water can be produced by reacting 525 liters of oxygen with excess hydrogen

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3 years ago

C(S)+O2(g)-->CO2(g)

soldi70 [24.7K]

<u>Answer:</u> The correct answer is 1.18 g.

<u>Explanation:</u>

We are given a chemical equation:

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We know that at STP conditions:

22.4L of volume is occupied by 1 mole of a gas.

So, 2.21L of carbon dioxide is occupied by = $\frac{1}{22.4L}\times 2.21L=0.0986mol$ of carbon dioxide gas.

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So, 0.0986 moles of carbon dioxide is produced by = $\frac{1}{1}\times 0.0986=0.0986mol$ of carbon.

Now, to calculate the mass of carbon, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

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Hence, the correct answer is 1.18 g.

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3 years ago

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2 years ago

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Answer:

1.3×10⁻³ M

Explanation:

Hello,

In this case, given the dissociation reaction of acetic acid:

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We can write the law of mass action for it:

$Ka=\frac{[H_3O^+][CH_3CO_2^-]}{[CH_3CO_2H]}$

Of course, excluding the water as heterogeneous substances are not included. Then, in terms of the change $x$ due to the dissociation extent, we are able to rewrite it as shown below: