Ahypothetical substance has a melting point of −10°c and a boiling point of 155°c. if this substance is heated from 2°c to the gas at 155°c, which of the following would be used in the calculation:
1. specific heat capacity of the solid
2. heat of fusion
3. specific heat capacity of the liquid
4. heat of vaporization
5. specific heat capacity of the gas

Option 3. Specific heat capacity of the liquid

Explanation:

Let's think, the states for the substance.

In -10, substance turns from solid state to liquid, so at 2°C , state is liquid.

We have to take from liquid state at 2°C to 155°C, which is the boiling point.

As the substance doesn't change its state, we only have to apply the specific heat capacity of the liquid.

1. specific heat capacity of the solid → This is used, when the substance is solid.

2. Heat of fusion → Only used when you turn from liquid to solid

4. Heat of vaporization → Used when the substance changes its state from liquid to gas

5. specific heat capacity of the gas → Used when the substance is a gas.

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.