To prepare a solution of 50 wt% hso, a dilute waste acid containing 28 wt%hs0. is fortified with a purchased acid containing 96 wt% h2so4. i. draw a flow sheet to represent this process ii. write a differential mass balance on the total and sulfuric acid balance and calculate how many kilograms of the purchased acid must be bought for each 100 kg of dilute acid.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

i think it's c. i'm not sure but i think so.

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.