Write the word equation for the reaction of barium nitride with potassium

Barium nitride + potassium → potassium nitride + Barium.

Explanation:

The word equation is a chemical equation expressed in words rather than the conventional chemical formula. The word equation represent a chemical reaction of elements or compounds in words . The reactants are represented in words and the product sides are represented in words. The arrow is also included.

The reactions is as follows:

Barium nitride + potassium → potassium nitride + Barium.

The reaction is a displacement reaction .Potassium is more reactive metal than Barium , so it will displace a less reactive metal ion from it compound. The chemical reaction between barium nitride and potassium will produce potassium  nitride and barium.

The balanced chemical equation using chemical formula is as follows :

Ba3N2 + 6K → 2K3N + 3Ba

b.

the accuracy of the data.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.