# Problem: Consider the following acid-neutralization reactions involving the strong base NaOH(aq):HNO3(aq) + NaOH(aq) → NaNO3(aq) + H2O(l)HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)NH4+(aq) + NaOH(aq) → NH3(aq) + Na+(aq) + H2O(l)In the third equation NH4+(aq) is acting as an acid. Based on the value of ΔH˚ for this reaction, do you think it is a strong or a weak acid?

###### FREE Expert Solution

HNO3(aq) + NaOH(aq) → NaNO3(aq) + H2O(l)

ΔH°rxn = -55.83 kJ/mol

HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)

87% (103 ratings)
###### Problem Details
Consider the following acid-neutralization reactions involving the strong base NaOH(aq):

HNO3(aq) + NaOH(aq) → NaNO3(aq) + H2O(l)
HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
NH4+(aq) + NaOH(aq) → NH3(aq) + Na+(aq) + H2O(l)

In the third equation NH4+(aq) is acting as an acid. Based on the value of ΔH˚ for this reaction, do you think it is a strong or a weak acid?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Enthalpy of Formation concept. You can view video lessons to learn Enthalpy of Formation. Or if you need more Enthalpy of Formation practice, you can also practice Enthalpy of Formation practice problems.