Sample of test

Part I. Calculate the [H3O in a solution prepared by mixing 25.0mL of 1.0M HCl with 50.0mL of 0.50M KOH. A. 1.0 M B. 0.50 M C. 0.25 M D. 1.0 107 M The pH of a 0.10M KOH solution is Consider the acid-base equilibrium system: HC2O4H2BO3↔H3BO3 C2O42 Identify the Brönsted-Lowry bases in this equilibrium. A. H2BO3and H3BO3 B. HC2O4and H3BO3 C. HC2O4and C2O42 D. H2BO3and C2O42 Which of the following graphs describes the relationship between pH and pOH? Which of the following solutions would have a pH value greater than 7? A. [OH−] = 2.4 × 10−2 M B. [H3O+] = 1.53 × 10−2 M C. 0.0001 M HCl D. [OH−] = 4.4 × 10−9 M Which of the following is NOT a pure form of Carbon? a. fullerenes b. graphite c. calx d. diamond For Classififcation:A. Sodium B. Aluminum C. Magnesium D. Carbon E. Lithium F. Calcium G. Beryllium H. Oxygen I. Fluorine _____1. Highly flammable metal _____2. Light malleable ductile that resists corrosion _____3. Orange or yellow color to flames _____4. Lightest metal known Good Luck!