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nalin [4]
3 years ago
14

Which of the following is the general format for a double displacement reaction? A + BX AX + B A + B AB AB A + B AX + BY AY + BX

Chemistry
2 answers:
Effectus [21]3 years ago
4 0

>  AX + BY   AY + BX  <

aleksandrvk [35]3 years ago
3 0

Answer is: AX + BY → AY + BX.

For example, balanced chemical reaction:

3K₂SO₄(aq) + Ca₃(PO₄)₂(s) → 2K₃PO₄(aq) + 3CaSO₄(s).

This chemical reaction is double displacement reaction - cations and anions of the two reactants switch places and form two new compounds.

aq(aqueous) means dissolved in water.

s(solid) means that salt not dissolved in water.

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8 0
3 years ago
Please calculate the mixed volume (Vmix) when 0.300 mol of ethanol and 0.200 mol of water are mixed. Hint: The partial molar vol
Grace [21]

Answer:

If we assume the molar volumes of water and ethanol 17.0 and 57.0 cm³/mol, respectively, Vmix = 20.5 cm³.

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The molar volume of a substance is the ratio between the volume and the number of moles of the substance. It represents the volume that 1 mol of it occupies. Because we don't have access to page 24, let's assume the molar volumes of water and ethanol 17.0 and 57.0 cm³/mol, respectively.

The volume of mixture (Vmix) is the sum of the volume of each substance, which is the number of moles multiplied by molar volume, so:

Vmix = 0.300*57 + 0.200*17

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Vmix = 20.5 cm³

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