Observations: Selec 1. 1 a + 1. Solution in a burette a 2. Solution by a pipette 3. Solution in conical flask : 4. Indicator 5. End point :

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.