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Praxis II General Science

Category - Chemistry

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Amanda is trying to determine the solubility of nickel chloride (NiCl₂) in water. She finds that her 1 liter saturated solution has 0.55 M of chloride ions. What is the solubility of nickel chloride?

23.8 g/L
31.7 g/L
35.5 g/L
41.3 g/L
52.1 g/L

Explanation

Answer: C - If a saturated solution has 0.55 M of chloride ions, then that means 0.275 moles of nickel chloride have dissolved. 1 mole of nickel chloride weighs 129 grams. Thus, the solubility is 129 x 0.275 g/L, or 35.4g/L.

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