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3 years ago

What is the hydrogen ion concentration of a substance with a hydroxide ion concentration of 1.07x10-10M?

Chemistry

1 answer:

never [62]3 years ago

8 0

Answer:

Explanation:

[OH⁻] = 1.07 x 10⁻¹⁰

[H⁺] x [ OH⁻ ] = 10⁻¹⁴

[H⁺] x 1.07 x 10⁻¹⁰ = 10⁻¹⁴

[H⁺] = 10⁻¹⁴ / 1.07 x 10⁻¹⁰

= .93458 x 10⁻⁴

= 9.3458 x 10⁻⁵

= 9.35 x 10⁻⁵

= 9.35e-5. M.

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A solution of H 2 SO 4 ( aq ) with a molal concentration of 1.66 m has a density of 1.104 g / mL . What is the molar concentrati

uysha [10]

Answer:

1.58 M

Explanation:

$H_2SO_4$ is 1.66 m concentration.

Which means that 1.66 moles of $H_2SO_4$ are present in 1 kg of the solvent, water.

Mass of water = 1 kg = 1000 g

Moles of $H_2SO_4$ = 1.66 moles

Molar mass of $H_2SO_4$ = 98.079 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$1.66\ mole= \frac{Mass}{98.079\ g/mol}$

$Mass_{H_2SO_4}= 162.81114\ g$

Total mass = 1000 g + 162.81114 g = 1162.81114 g

Density = 1.104 g/mL

Volume of the solution = Mass / Density = 1162.81114 / 1.104 mL = 1053.27 mL = 1.05327 L

Considering:-

<u>Molarity = moles/ Volume of solution = 1.66 / 1.05327 M = 1.58 M </u>

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3 years ago

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OlgaM077 [116]

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What is the molarity of a solution that contains 9.63 grams of HCl in 1.5 liters of solution? 1 H 1.01 Hydrogen 17 Cl 35.45 Chlo

madam [21]

Hey there !

Molar mass HCl :

HCl =1.01 + 35.45 => 36.46 g/mol

Number of moles ( solute) :

n = m / mm

n = 9.63 / 36.46

n = 0.2641 moles

Therefore :

M = moles / volume ( L )

M = 0.2641 / 1.5

=> 0.176 M

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4 years ago

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