Calculate the molarity of each of the following solutions: (a) 10.0 g H2SO4 in 250 mL of solution, (b) 6.00 g NaOH in 500 mL of solution, (c) 25.0 g AgNO3 in 1.00 L of solution.

A sample of a crude grade of sodium hydroxide is sent to a laboratory to be tested for sodium hydroxide content. A 4.500 g sample is dissolved and diluted to 500 mL with water. A 25 mL sample of this solution is titrated with a 0.4838 molar hydrochloric acid solution and requires 19.39 mL to reach the equivalence point. How many moles of sodium hydroxide were in the 4.500 g sample? What mass of sodium hydroxide is this? What is the percent of sodium hydroxide in the crude sample?

1. Calculate the pH of a solution prepared by mixing 35.0 mL of 0.75 M HC2H3O2 and 15.0 mL of 0.60 M NaC2H3O2 ? 2.Calculate the pH of a solution prepared by mixing 35.0 mL of 0.50M HC2H3O2 and 17.0 mL of 0.60 M NaOH?

The standard free energies of formation (AGF) of PC (g) and PCI,(g) are -286 and -325 kJ/mol, respectively. The equilibrium constant for the following reaction at 25°C equals (R8314 J/mol.K) OA 15X107 OB. 27 X 10-¹ OC 1.7 X 10 OD 8.1 X 105 D PCI, (g) PC, (g) + Cl₂(g)