5. The reaction of magnesium oxide with hydrochloric acid carried out in a calorimeter caused the temperature of water to change from 25.0°C to 46.0°C. In this reaction 4860J of energy was released. What
mass of water was present?

28528289 29823282 8298232 39858

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.