# Problem: 1) What is the concentration of K + in 0.15 M of K 2S?  2) If CaCl2 is dissolved in water, what can be said about the concentration of the Ca 2+ ion?a. It has the same concentration as the Cl − ion.b. Its concentration is half that of the Cl − ion.c. Its concentration is twice that of the Cl − ion.d. Its concentration is one-third that of the Cl − ion.

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86% (258 ratings) ###### Problem Details

1) What is the concentration of K + in 0.15 M of K 2S?

2) If CaCl2 is dissolved in water, what can be said about the concentration of the Ca 2+ ion?

a. It has the same concentration as the Cl ion.

b. Its concentration is half that of the Cl ion.

c. Its concentration is twice that of the Cl ion.

d. Its concentration is one-third that of the Cl ion.

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Based on our data, we think this problem is relevant for Professor Fajuyigbe's class at HCC.