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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