Physical because the substance isn’t chemically changing
Answer:
The minimum concentration of sodium sulfate required to producer precipitation is .
Explanation:
Concentration of barium chloride=
Concentration of barium ions =
1 mol of barium chloride gives 1 mol of barium ions.
The solubility product for barium sulfate=
0.019 M S
The expression of solubility product for barium sulfate:
The minimum concentration of sulfate ions =
1 mole of sulfate ions are proceed form 1 mole of sodium sulfate solution.
Then sulfate ions will be obtained from:
of sodium sulfate
The minimum concentration of sodium sulfate required to producer precipitation is .
Answer:
Id say the third one
Explanation: chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.
thats the only one that is close to definition
CH4+2O2–>CO2+2H2O
4Fe+3O2–>2Fe2O3