# Last edited on 2020-02-16 14:03:47 by jstolfi

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Introduction

Goals and methods

Reagent amounts

We arbitrarily choose to make 0.05 mol of each magnesium salt. That was
way too much.

Preparing the solutions

Had to use ice-cold water for NH4HCO3 to prevent decomposition.

The Na2CO3 dissolved promptly. The NaHCO3 barely dissolved in the overfull beaker.
The anhydrous MgSO4 first created a milky suspension and took several minutes to dissolve,
but then was clear.

Reactions

Mistakes

The 0.05 mol amount was excessive.

The NH4HCO3 solution prepared at 28 C was decomposing spontaneously.

The beakers were barely large enough to hold enough water to dissolve the NaHCO3.

Should have used the same molar concentration for MgSO4.