A5.0-gram sample of fe(s) is to be placed in 100. milliliters of hcl(aq). which changes will result in the fastest rate of reaction? 1. increasing the surface area of fe(s) and increasing the concentration of hcl(aq) 2. increasing the surface area of fe(s) and decreasing the concentration of hcl(aq) 3. decreasing the surface area of fe(s) and increasing the concentration of hcl(aq) 4. decreasing the surface area of fe(s) and decreasing the concentration of hcl(aq)