Blog

Given the following data, determine the order of the reaction with respect to ICl. Experiment [H2] (torr) [ICl] (torr) Rate (M/s) 1 250 325 1.34 2 250 81 0.331 3 50 325 0.266

Use the standard half-cell potentials listed below to calculate the standard cell potential for a galvanic cell at 25°C made from those materials.  Pb2+(aq) + 2 e⁻ → Pb(s) E° = -0.13 V Br2(l) + 2 e⁻ → 2 Br⁻(aq) E° = +1.07 V  

Consider the following reaction at equilibrium. What effect will reducing the volume have on the system?

Use the standard half-cell potentials listed below to calculate the standard cell potential for a galvanic cell at 25°C made from those materials.  Sn2+(aq) + 2 e⁻ → Sn(s) E° = -0.14 V Ag⁺(aq) + e⁻ → Ag(s) E° = +0.80 V  

What is the osmotic pressure of a solution of 55.8 g of aspartame ( 342.3 g/mol ) in 200 mL of water at room temperature?

The solubility of lead (II) iodide is 0.064 g/100 mL at 20oC. What is the solubility product for lead (II) iodide?  

Calculate the pH of a 0.800 M KBrO solution. Ka for hypobromous acid, HBrO, is 2.0 × 10-9.

If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.11, which of the following is TRUE?

The acid-dissociation constant of hydrocyanic acid (HCN) at 25.0°C is 4.9 × 10-10. What is the pH of an aqueous solution of 0.040 M sodium cyanide (NaCN)?

You dissolve 0.120 g of the protein in water to make 20.00 mL of solution, and the osmotic pressure is 0.004644 atm at 298 K. What is the molar mass?