Enter an equation for the precipitation reaction that occurs (if any) when solutions of sodium hydroxide and magnesium nitrate are mixed. Express your answer as a chemical equation. Identify all of the phases in your answer. Enter noreaction if no precipitate is formed.

Mg(NO3)2(aq) + 2NaOH(aq) —> Mg(OH)2 (s) + 2NaNO3 (aq)

Explanation:

Equation for the reaction is given below:

Mg(NO3)2(aq) + NaOH(aq) —>

In solution, Mg(NO3)2 and NaOH will dissociate as follow:

Mg(NO3)2 —> Mg^2+ + 2NO3^-

NaOH —> Na+ + OH-

During the reaction, double displacement occurs as shown below:

Mg^2+ + 2NO3^- + Na+ + OH- —> Mg^2+OH- + Na+2NO3^-

The balanced elemental equation is given as:

Mg(NO3)2(aq) + 2NaOH(aq) —> Mg(OH)2 (s) + 2NaNO3 (aq)

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.