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Start with CaCl2. 250ml of 0.20M solution will give (0.2/1000)*250 moles

= 0.05 moles.

However, CaCl2--> Ca2+ + 2Cl- (1:2 reaction) so 0.05moles of CaCl2 will give 2* 0.05 moles cl ions =0.1moles.

KCl will give (0.4/1000)* 250 moles

=0.1 moles

Since KCl--> K+ + Cl- (1:1 reaction) so 0.1 moles KCl will give 0.1 moles Cl ions.

Add the 2 together so 0.1moles + 0.1 moles = 0.2 moles in total.

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13y ago

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