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Which metal reacts spontaneously with Sr2+ions?

June 2018 NY Regents Chemistry Exam


49 Which metal reacts spontaneously with Sr2+ions?

(1) Ca(s) (2) Co(s)

(3) Cs(s)

(4) Cu(s)


Solution: We need to look at Table J on the Periodic Table. The metal that reacts spontaneously with Sr2+ions must be higher on the table (more active) than Sr.

Answer: 3


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