A student wants to prepare a white precipitate of barium sulfate beginning with…
CHEMISTRY · Multi-part · CBSE · Chemistry · Chemical Reactions and Equations · Chemical Reactions and Equations
Problem
A student wants to prepare a white precipitate of barium sulfate beginning with aqueous solutions. The net ionic equation for the desired reaction is
Ba2+(aq)+SO42−(aq)→BaSO4(s).
The stockroom supplies only the following reagents, all as 0.10 M aqueous solutions:
• sodium sulfate
• barium nitrate
• calcium nitrate
• magnesium nitrate
Answer the following.
(a) Select one pair of reagents from the list that, when mixed in stoichiometric amounts, will produce the reaction represented by the net ionic equation above. Write the balanced molecular equation for the reaction that occurs, including physical states.
(b) Write the complete ionic equation corresponding to the molecular equation you wrote in part (a).
(c) Identify the spectator ion(s) in the reaction mixture and show explicitly that both mass and charge are conserved when the complete ionic equation is simplified to the given net ionic equation.