etwood Park Secondary for school use only from September 2014 to June 30, 2015 11. An aqueous solution is prepared by dissolving 5.6 L of NH, gas, measured at STP, in enough water to produce 750.0 mL of solution. Calculate the pH of this solution etwood Park Secondary for school use only from September 2014 to June 30, 2015 11. An aqueous solution is prepared by dissolving 5.6 L of NH, gas, measured at STP, in enough water to produce 750.0 mL of solution. Calculate the pH of this solution