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saul85 [17]
3 years ago
11

Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions:

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

Answer:

MgI₂

MgO

PbI₄

PbO₂

Explanation:

Binary compounds are formed when a cation combines with an anion. Such compounds are also known as ionic compounds.  

The four binary compounds that can be formed are as follows:

Mg²⁺ I⁻

When writing the empirical formula the charge of the anion is written as the subscript of the cation, and the charge of the cation is written as the as script of the anion, such as  

Mg₁I₂ or MgI₂

Mg²⁺ O²⁻

Mg₂O₂ or MgO

Pb⁴⁺ I⁻

Pb₁I₄ or PbI₄

Pb⁴⁺ O²⁻

Pb₂O₄ or PbO₂

cupoosta [38]3 years ago
4 0
MgO
MgI2
PbO2
PbI4

These are the possible compounds
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UNO [17]

Answer:

Boiling point of the solution is 100.964°C

Explanation:

In this problem, first, you must use Raoult's law to calculate molality of the solution. When you find the molality you can obtain the boiling point elevation because of the effect of the solute in the solution (Colligative properties).

Using Raoult's law:

Psol = Xwater × P°water.

As vapour pressure of the solution is 23.0torr and for the pure water is 23.78torr:

23.0torr= Xwater × 23.78torr.

0.9672 = Xwater.

The mole fraction of water is:

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Also,

1 = X_{H_2O}+X_{solute}

You can assume moles of water are 0.9672 and moles of solute are 1- 0.9672 = 0.0328 moles

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Boiling point elevation formula is:

ΔT = Kb×m×i

<em>Where ΔT is how many °C increase the boiling point regard to pure solvent, Kb is a constant (0.512°C/m for water), m molality (1.883m) and i is Van't Hoff factor (Assuming a i=1).</em>

Replacing:

ΔT = 0.512°C/m×1.882m×1

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As the boiling point of water is 100°C,

<h3>Boiling point of the solution is 100.964°C</h3>

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