The diagram illustrates a titration experiment. Which row correctly describes the reaction taking place in the conical flask?
- Athe reaction is endothermic / the value of $\Delta H$ is negative
- Bthe reaction is endothermic / the value of $\Delta H$ is positive
- Cthe reaction is exothermic / the value of $\Delta H$ is negative
- Dthe reaction is exothermic / the value of $\Delta H$ is positive