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iren2701 [21]
3 years ago
8

A solution with a ph of 4 has _________ the concentration of h+ present compared to a solution with a ph of 5.

Chemistry
1 answer:
Marina CMI [18]3 years ago
7 0
<span>A solution with a pH of 4 has ten times the concentration of H</span>⁺<span> present compared to a solution with a pH of 5.
</span>pH <span>is a numeric scale for the acidity or basicity of an aqueous solution. It is  the negative of the base 10 logarithm of the molar concentration of hydrogen ions.
</span>[H⁺] = 10∧-pH.
pH = 4 → [H⁺]₁ = 10⁻⁴ M = 0,0001 M.
pH = 5 → [H⁺]₂ = 10⁻⁵ M = 0,00001 M.
[H⁺]₁ / [H⁺]₂ = 0,0001 M / 0,00001 M.
[H⁺]₁ / [H⁺]₂ = 10.
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3 years ago
Determine the boiling point of a 3.70 m solution of phenol in benzene. Benzene has a boiling point of 80.1°C and a boiling point
xeze [42]

Answer: The boiling point of a 3.70 m solution of phenol in benzene is 89.5^0C

Explanation:

Elevation in boiling point:

\Delta T_b=i\times k_b\times m

where,

\Delta T_b = change in boiling point

i= vant hoff factor = 1 (for benzene which is a non electrolyte )

k_b = boiling point constant = 2.53^0C/kgmol

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T_{solution}=89.5^0C

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8 0
3 years ago
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Ksju [112]

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3 0
3 years ago
Which of the following are covalent compounds? Select all that apply.<br> CaO<br> CO2<br> KBr<br> NO
Sergeeva-Olga [200]

Answer

CO2 and NO are covalent

Explanation:

Which of the following are covalent compounds? Select all that apply.

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CO2 and NO are covalent

3 0
3 years ago
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