Calculate ΔS°rxn for the following reaction. The S° for each species is shown below the reaction. C2H2(g) + H2(g) → C2H4(g) S°(J/mol∙K) 200.9 130.7 219.3  

The truth table below represents the following argument. Look at the truth table carefully, and answer the questions below. (pq)  r ~r ~q                    ~p     C1 C2 C3 C4 C5 C6 C7 C8   p q r ~q ~r pq (pq) r ~p R1 T T T F F T   F R2 T T   F T T F F R3 T F T T   F T F R4 T F F T T F T F R5 F T T F F T T T R6 F T F F T T F T R7 F F T T F T T T R8 F F F T T T F T What is the correct truth value for the missing value in C7, R1?

Refer back to the truth table in the question above that represents the following argument: (pq)  r ~r ~q                   ~p   Which rows represent the argument’s premise(s)?

On scratch paper, balance the following redox reaction in acidic solution, and then answer the question below. NO(g) + Pb2+

Which of the following statements about the anode in an electrochemical cell is true?

Which one of the following ions is classified incorrectly?

Which one of the following will form a buffer?

What is the pH of a buffer containing 0.15 M HClO (aq) and 0.15 M NaClO (aq)?

Classify each of the following as an acidic, basic, or neutral salt, and then answer the following question. Which one of the following is an acidic salt?

On scratch paper, balance the following redox reaction in basic solution, and then answer the question below. MnO4- + I-