Without doing a calculation, predict whether your estimate in part (a) is more negative or less negative than the true reaction enthalpy. Without doing a calculation, predict whether your estimate in part (a) is more negative or less negative than the true reaction enthalpy. The estimate from Part A is less positive or larger than the true reaction enthalpy The estimate from Part A is less positive or smaller than the true reaction enthalpy. The estimate from Part A is less negative or larger than the true reaction enthalpy. The estimate from Part A is equal to the true reaction enthalpy