Aqueous zinc chloride is added to a sample of acidified aqueous silver nitrate. (i) What can be observed? (ii) What ionic equation, with state symbols, can be constructed for the reaction that occurs?

Expert Answers

An illustration of the letter 'A' in a speech bubbles

Zinc chloride is an ionic chemical salt with the formula ZnCl2.  It is composed of the zinc cation (Zn++) and two chloride anions (Cl-).  Silver nitrate is also an ionic chemical salt with the formula AgNO3.  It is composed of a silver cation (Ag+) and a nitrate anion (NO3-).  Both...

See
This Answer Now

Start your 48-hour free trial to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.

Get 48 Hours Free Access

Zinc chloride is an ionic chemical salt with the formula ZnCl2.  It is composed of the zinc cation (Zn++) and two chloride anions (Cl-).  Silver nitrate is also an ionic chemical salt with the formula AgNO3.  It is composed of a silver cation (Ag+) and a nitrate anion (NO3-).  Both chemicals are soluble in water, and when mixed together you need to know that the silver and chloride anions will react to form silver chloride (AgCl), a chemical that is a white solid and is largely insoluble in water.  So the answer to part one is that two clear aqueous solutions will be mixed together to make a cloudy mixture with a fine white solid suspended in the water.  To answer the second part, let's look at the complete ionic equation below:

`Zn_(aq)^(2+) + 2Cl_(aq)^(-) + 2Ag_(aq)^(+) + 2NO3_(aq)^(-) -> 2AgCl_(s) + Zn_(aq)^(2+) + 2NO3_(aq)^(-)`

This shows that the zinc chloride and silver nitrate will form solid silver chloride and zinc nitrate, which is completely soluble in water and will remain as ions.  The net ionic equation eliminates the unused spectator ions and is shown below:

`2Cl_(aq)^(-) + 2Ag_(aq)^(+) -> 2AgCl_(s)`

Approved by eNotes Editorial Team