The following equation represents the enthalpy of a mixture of water and sulfuric acid. Calculate the partial molar enthalpies for water and sulfuric acid for a mole fraction of sulfuric acid of 0.20

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

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