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Solution: Which of the following reactions is the slowest at room temperature?a. Zn(s) + S(s) → ZnS(s)b. Ba2+(aq) + SO42-(aq) → BaSO4(s)c. NH3(g) + HCl(g) → NH 4Cl(g)d. 2 Ag+(aq) + CO32-(aq) → Ag 2CO3(s)

Problem

Which of the following reactions is the slowest at room temperature?

a. Zn(s) + S(s) → ZnS(s)

b. Ba2+(aq) + SO42-(aq) → BaSO4(s)

c. NH3(g) + HCl(g) → NH 4Cl(g)

d. 2 Ag+(aq) + CO32-(aq) → Ag 2CO3(s)

Solution

We are being asked to determine which of the given reaction is slowest at room temperature. 

Under Collision Theory, a chemical reaction is successful if reactant molecules can combine to form a new product through effective collisions. 


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