Find the volume in dm³ and in ml of a 0.505 mol/dm³ Na04 solution required to react with 40ml of "0-505M H₂SO4 Solution Calculate the moles the acid in 10 ml of the acid then wa it to determine the no of moles of base from the equation, then calculate the volume of base, using the molarity of base and no of moles of base from the equation.

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.