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Degger [83]
3 years ago
13

What is the OH in a solution made by adding 0.060 mole of calcium oxide to 500.0ml

Chemistry
1 answer:
Alex73 [517]3 years ago
8 0

Answer:

0.24 mol/L.

Explanation:

  • Ca(OH)₂ dissociates in solution according to the equation:

<em>Ca(OH)₂ → Ca²⁺ + 2OH⁻.</em>

<em></em>

Every 1.0 mol of Ca(OH)₂ dissociates to give 2.0 moles of OH⁻.

∴ The no. of moles of OH⁻ produced from 0.06 mol of Ca(OH)₂ = (2 x 0.06 mol) = 0.12 mol.

<em>∴ [OH⁻] = no. of moles / V of the solution</em> = (0.12 mol)/(0.5 L) = <em>0.24 mol/L.</em>

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4 years ago
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3 years ago
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Lesechka [4]

The full question is shown in the image attached to this answer

Answer:

6.2 * 10^-3

Explanation:

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3 years ago
How many atoms of lead are contained in 0.532mol?​
Colt1911 [192]

Answer:

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Explanation:

No. of Mole of lead (Pb) = 0.532 mol

No. of atoms of lead = ?

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Formula Used to calculate

no. of moles = numbers of particles (ions, molecules, atoms) /Avogadro's number

Avogadro's no. = 6.023 x10²³

So,

The formula could be written as

no. of atoms of lead Pb = no. of moles x 6.023 x10²³

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so 3.2043 x 10²³ atoms of lead are contained in 0.532 mole.

6 0
3 years ago
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