Enthalpies of solution of LiCl and NH4Cl were also measured. Combination of the measured results with auxiliary thermochemical data from the literature yielded values of −(165.14±1.55) kJ mol−1 [−(39.47±0.37) kcalth mol−1] and −(164.77±1.51) kJ mol−1 [−(39.38±0.36) ...
What is the change in enthalpy for the reaction HCl + NaOH gives NaCl + H2O, in kJ/mol, calculated using Hess's Law with the given values for the enthalpy of formation of each compound (HCl, NaOH, NaCl, and H2O)? Use Hess's Law and a table ...
化學加成律 addition law of thermochemistry。其實不只反應熱遵循黑斯定律,所有伴隨化學反 應所發生的能量變化都遵守黑斯定律,自由能以及亂度也都可以相加減。 標準生成熱 standard heat of formation 由於實驗只能測量熱能變化量,無法測量某個物質的熱含量,所以必須有一個公定的基 準來作參照。化學家們約定,...
Calculate the molar enthalpy of formation of I- (aq) if that of H2 (g) + I2 (s)--- 2H+ (aq) + 2I- (aq) is -110.38 kJ. What is the balanced chemical equation for the reaction used to calculate enthalpy degrees F, of MgCO3(s)? Using the standard ...
由上面這個例子我們可以看出,黑斯定律允許熱化學反應式相加減,所以黑斯定律也稱作熱化學加成律additionlawofthermochemistry。其實不只反應熱遵循黑斯定律,所有伴隨化學反應所發生的能量變化都遵守黑斯定律,自由能以及亂度也都可以相加減。 標準生成熱standardheatofformation ...