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Phase Diagram

Q. Look at the phase diagram of H2O in Figure 10.28 in the textbook, and tell what happens to an H2O sample when the following changes are made. The pressure is increased from 85 atm to 226 atm at a constant temperature of 380°C

Solved • Nov 25, 2019

Phase Diagram

Q. Look at the phase diagram of H2O in Figure 10.28 in the textbook, and tell what happens to an H2O sample when the following changes are made. The temperature is reduced from 48°C to -4.4°C at a constant pressure of 6.5 atm.

Solved • Nov 25, 2019

Cell Potential

Q. The voltage generated by the zinc concentration cell described by the line notation Zn(s) | Zn2+ (aq, 0.100 M) || Zn2+ (aq, ? M) | Zn(s) is 17.0 mV at 25°C. Calculate the concentration of the Zn2+ (aq) ion at the cathode.

Solved • Nov 26, 2019

Bond Angles

Q. Predict the shape, state the hybridization of the central atom, and give the ideal bond angle(s) and any expected deviations for AsCl4−.

Solved • Nov 26, 2019

Homonuclear Diatomic Molecules

Q. Describe the hybrid orbitals used by the underlined atoms in the molecule below,

Solved • Nov 26, 2019

The Nernst Equation

Q. One half-cell in a voltaic cell is constructed from a silver wire electrode in a AgNO3 solution of unknown concentration. The other half-cell consists of a zinc electrode in a 1.6 M solution of Zn(NO3)2. A potential of 1.38 V is measured for this cell. Use this information to calculate the concentration of Ag+(aq)

Solved • Nov 26, 2019

pH and pOH

Q. Calculate the pH after 0.018 mole of NaOH is added to 1.00 L of each of the four solutions. (Assume that all solutions are at 25°C.) in 0.149 M sodium acetate (NaC2H3O2)

Solved • Nov 26, 2019