An industrial facility must neutralize of wastewater that contains hydrochloric acid…
CHEMISTRY · Multi-part · A Level · Chemistry · Amount of substance · Amount of substance
Problem
An industrial facility must neutralize 1.000×103L of wastewater that contains 0.0200M hydrochloric acid before discharge. Solid sodium carbonate, Na2CO3, is selected as the neutralizing agent. Assume the process occurs at standard temperature and pressure (STP) and that all acid–base reactions proceed to completion.
(a) Write the balanced molecular equation for the reaction between aqueous HCl and solid Na2CO3.
(b) Calculate the minimum mass of Na2CO3 (in kilograms) required for complete neutralization.
(c) Determine the volume, in liters at STP, of CO2(g) produced during neutralization.
(d) If only 90.0% of the Na2CO3 actually dissolves, how many grams of solid Na2CO3 remain undissolved after neutralization is complete?