Question

The student put 2.5cm3 of sodium hydroxide solution and 5 drops of universal indicator into a polystyrene cup and recorded the temperature of the alkali. After 10 secs the student added 2.5 cm3 of dilute hydrochloric acid to the alkali and recorded the temperature every 5s for another 30 secs -

calculate the energy given out = total volume of reaction mixture *4.2*28 =?

Answer 1

E=0.005*4.2*28=0.588 J;

Answer: 0.588 J