A piece of sodium metal reacts completely with water as follows.
2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g)
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 420 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
Calculate the volume in mL of a 1.420 M NaOH solution required to titrate the following solutions.
(a) 40.00 mL of a 2.430 M HCl solution
(b) 25.00 mL of a 6.500 M H2SO4 solution
(c) 75.00 mL of a 1.500 M H3PO4 solution