Some basic concepts of chemistry [ conservation of mass ]
Q1. 15.8 g NaHCO3 is treated with 12.0 g CH3COOH.
The residue was found to weigh 18.0 g.
Determine the mass of CO2 escaped in the reaction.
Q2. 5.8g of MgCO3 on heating gave 2.8 g MgO and
3.0g CO2 Show that these observations are in
agreement with law of conservation of mass.
Q.3 25.5 g NaHCO3 is treated with 15.0 g CH3COOH.
The residue was found to weigh 39.72 g.
Determine the mass of CO2
escaped in the reaction.
Q.4 18.9 g NaHCO3 is treated with 15.0 g CH3COOH.
The residue was found to weigh 33.5.0 g.
Determine the mass of CO2
escaped in the reaction.
Q.5 19.2 g NaHCO3 is treated with 15.0 g CH3COOH.
The residue was found to weigh 32.50 g.
Determine the mass of CO2
escaped in the reaction.
Q6. 50g of MgCO3 on heating gave 21.88 g MgO and
28.12g CO2 Show that these observations are in
agreement with law of
conservation of mass.
Q7. 70g of MgCO3 on heating gave 32.88 g MgO
and 37.12g CO2 Show that these observations are
in agreement with law of
conservation of mass.