3. Which of the following are properties of ionic compounds? Select all that apply. A)Liquid at room temperature
B)High melting point
C)Conductive when dissolved in water and in molten (liquid state)
D)Solid at room temperature

Answer : The correct options are, (B), (C) and (D)

Explanation :

Ionic compound : It is defined as the compound that is formed when a metal cation bonded with non-metal anion. The metal cation and non-metal anion bonded with an electrostatic force of attraction.

The properties of ionic compounds are :

Ionic compounds are brittle and hard. They breaks easily into small pieces.

They have high melting point and boiling point.

They conduct electricity in liquid state not in solid state.

They are solids at room temperature.

Hence, the correct options are, (B), (C) and (D)

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

the answer to this question is 3.