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vichka [17]
3 years ago
13

Which compound, feco3 or pbbr2 is more soluble in acid than in base? why?

Chemistry
2 answers:
mario62 [17]3 years ago
8 0

Answer:FeCO3

Explanation:

Iron II carbonate dissolves in acid more easily because the Fe2+ will form complexes that are more stable in acidic media. In basic media, the iron II ion will precipitate from solution at high pH. Lead II ion is amphoteric and can dissolve both in acidic and basic media alike. Hence Fe2+ is more soluble in acidic media than in basic media.

VikaD [51]3 years ago
3 0
The compound FECO3 is more soluble in acid than in base because it is insoluble when put in water and also it has the boiling point of 632.48 Fahrenheit. The color of FECO3 is white and it is a crystal type element. 
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Given the Henry’s law constant for O2(4.34*109Pa) at 25° C, calculate the molar concentration of oxygen in air-saturated and O2s
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This is an incomplete question, here is a complete question.

The Henry's law constant for oxygen dissolved in water is 4.34 × 10⁹ g/L.Pa at 25⁰C.If the partial pressure of oxygen in air is 0.2 atm, under atmospheric conditions, calculate the molar concentration of oxygen in air-saturated and oxygen saturated water.

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Explanation :

As we know that,

C_{O_2}=k_H\times p_{O_2}

where,

C_{O_2} = molar solubility of O_2 = ?

p_{O_2} = partial pressure of O_2 = 0.2 atm  = 1.97×10⁻⁶ Pa

k_H = Henry's law constant  = 4.34 × 10⁹ g/L.Pa

Now put all the given values in the above formula, we get:

C_{O_2}=(4.34\times 10^9g/L.Pa)\times (1.97\times 10^{-6}Pa)

C_{O_2}=8.55\times 10^3g/L

Now we have to molar concentration of oxygen.

Molar concentration of oxygen = \frac{8.55\times 10^3g/L}{32g/mol}=2.67\times 10^2mol/L

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Answer:

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Answer 10 - Remaining energy is used in metabolism

Explanation:

Answer 9

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Answer 10

Because the remaining 90% energy is utilized by the producer for its metabolism

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