For double-replacement reaction, the cation of the first reactant would combine with the anion of the second reactant, and vice versa. Therefore, in this case, the product would be Potassium Nitrate (KNO3) and Silver Bromide (AgBr).
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A double replacement reaction is a reaction in which two different compounds are mixed together and both their cations and anions get exchanged with each other respectively.
When potassium bromide reacts with silver nitrate then it results in the formation of potassium nitrate and silver bromide.
The law of conservation of mass or principle of mass conservation
Explanation:
It states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.