Zinc chloride can be made from the reaction between zinc oxide and hydrochloric acid. Describe a laboratory method to produce pure dry  crystals of zinc chloride. (6 marks) 
Suggest an alternative to zinc oxide that could react with hydrochloric acid to give you the desirable product.(1 mark)

Pure dry crystals of zinc chloride can be produced by crystallisation, then filtration to remove excess solution, followed by drying on a watch glass or in a warm oven.

answer- Yes. The reaction of hydrochloric acid with zinc oxide to form zinc chloride and water is a neutralization reaction because acid (HCl) is a neutralizing base (ZnO).

false

because it does not have the potential to be entirely used up

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.