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gizmo_the_mogwai [7]
4 years ago
6

Which of the following statements best compares the pH value of H3PO4 and HCl?

Chemistry
1 answer:
wel4 years ago
5 0

Answer:

Option B. Both have a pH less than 7, but H3PO4 has a lower pH than HCl

Explanation:

Those are acid, so the pH would be < 7.

H₃PO₄ is a weak acid with 3 dissociations

HCl is a strong acid.

pH depends on [H]⁺

H₃PO₄  →  3H⁺  +  PO₄⁻³

HCl →  H⁺  +  Cl⁻

If both acid, have the same concentration, [H⁺]H₃PO₄ > [H⁺]HCl, that's why the pH from the phosphoric will be lower.

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The modern periodic table is arranged in order of increasing. True or Fase
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Answer:

The modern periodic table is arranged on order of increasing atomic number.

Explanation:

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A geochemist in the field takes a 25.0 mL sample of water from a rock pool lined with crystals of a certain mineral compound X .
san4es73 [151]

Answer:

1- Yes, we can calculate the solubility of mineral compound X.

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Explanation:

<em>1- Using only the information above, can you calculate the solubility of X in water at 15.0 °C? </em>

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The volume of water sample = 25.0 mL.

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<u><em>2-  If you said yes, calculate it.</em></u>

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∴ 1.0 mL  of water sample contains → ??? g of the mineral compound X.

1.0 ml of water sample will contain (0.3 g/25.0 mL) 0.012 g.

<em>∴ The solubility of the mineral compound X in the water sample is</em> <u><em>0.012 g/mL.</em></u>

<u><em></em></u>

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