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If cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion?

2 Answers

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Final answer:

Dissolving CaCl2 in water results in a stoichiometric amount of Ca2+ ions, with one mole of CaCl2 producing one mole of Ca2+ ions, equating to 2 equivalents due to the +2 charge of calcium.

Step-by-step explanation:

When Cacl2 is dissolved in water, the concentration of the Ca2+ ion will depend on the stoichiometry of the dissolution process. For every one mole of CaCl2 that dissolves, two moles of Cl- ions and one mole of Ca2+ ions are produced in solution. Therefore, if one mole of CaCl2 is dissolved, there will be one mole of Ca2+ ions present in the solution, which translates to 2 equivalents (Eq) of Ca2+ ions since calcium has a +2 charge.

User Siddharth Pant
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4 votes
The concentration of
Cl^(-) ions will be double than that of
Ca^(2+)

Calcium chloride -
CaCl_(2) has one Ca atom and 2 atom of chlorine.

When it is dissolved in water, it disassociates into
Ca^(2+) and
2Cl^(-)

Thus, the concentration of
Cl^(-) ions will be double than that of
Ca^(2+)

Or we can say the ratio of
Cl^(-) :
Ca^(2+) = 2:1
User AvielNiego
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