Question

For the following reaction, how much energy would be needed to produce 3 moles of Na2CO3? PLEASE show work. 2NaHCO3+85kJ yields Na2CO3+H20+CO2

Answer 1

The given reaction is rewritten below,

2NaHCO3 + 85kJ --> Na2CO3 + H2O + CO2

It can be concluded that every 2 moles of NaHCO3 one needs 85kJ of energy. To determine the amount of energy needed for 3 moles of NaHCO3, the concept of ratio and proportion may be used.

(85 kJ/ 2moles NaHCO3) (3 moles NaHCO3)
= 127.5 kJ

Answer: 127.5 kJ