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Complete and balance each of the following equations. If no reaction occurs, enter NOREACTION.

Complete and balance each of the following equations. If no reaction occurs, enter-example-1
User Pimaster
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Answer

Part A:

Given equation:


KI_((aq))+BaS_((aq))\rightarrow

The above equation is an example of a double replacement reaction. A double replacement (or double displacement) reaction is a reaction in which the positive and negative ions of two ionic compounds exchange.

Note: The oxidation number of:

K = +1

I = -1

Ba = +2

S = -2

So, the complete chemical equation including phases of the given reaction is:


2KI_((aq))+BaS_((aq))\rightarrow BaI_(2(aq))+K_2S_((s))

Part B:

Given equation:


KCl_((aq))+CaS_((aq))\rightarrow

Also, the equation is an example of a double replacement reaction.

Note: The oxidation number of:

K = +1

Cl = -1

Ca = +2

S = -2

The complete chemical equation including phases of the given reaction is:


2KCl_((aq))+CaS_((aq))\rightarrow K_2S_((s))+CaCl_(2(aq))

User Safaa Elgendi
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