1972 Ap Chemistry [extra — Quality] Free Response Answers

It’s all about Effective Nuclear Charge ( Zeffcap Z sub e f f end-sub

1-bromo-2-chloroethene exists as cis and trans (or E and Z ) isomers. 1972 ap chemistry free response answers

A voltaic cell is constructed with a Zn/Zn²⁺ (0.10 M) half-cell and a Cu/Cu²⁺ (0.0010 M) half-cell. Standard reduction potentials: Zn²⁺ + 2e⁻ → Zn (E° = -0.76 V); Cu²⁺ + 2e⁻ → Cu (E° = +0.34 V). Calculate the cell potential (E_cell) at 25°C. It’s all about Effective Nuclear Charge ( Zeffcap

The 1972 exam expected students to explicitly state that at a constant temperature, all gases have the same average kinetic energy, but different velocities. 3. Thermodynamics: Entropy and Enthalpy Calculate the cell potential (E_cell) at 25°C

Let ( s ) = molar solubility. ( K_sp = [Pb^2+][F^-]^2 = (s)(2s)^2 = 4s^3 ) ( 4s^3 = 3.7 \times 10^-8 ) ( s^3 = 9.25 \times 10^-9 ) ( s = \sqrt[3]9.25 \times 10^-9 ) ( s \approx 2.10 \times 10^-3 , \textM )