A chemist has synthesized a monoprotic weak acid and wants to determine its Ka value. To do so, the chemist dissolves 3.00 mmol of the solid acid in 100.0 mL water and titrates the resulting solution with 0.00500 M NaOH. After 10.0 mL NaOH has been added, the pH is 4.88. What is the Ka value for the acid?

what is the question?

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.