Baking soda (NaHCO3) decomposes when it is heated according to the equation below. How many kilojoules of heat are required to decompose 1.96 mol NaHCO3( s)?


2NaHCO3( s) + 129 kJ → Na2CO3( s) + H2O( g) + CO2( g)

2.53 × 10 2kJ
126 kJ
129 kJ
258 kJ