(main)[6]
Plan experiments based on the reaction of each solid with dilute hydrochloric acid so that you can determine which solid is in each bottle and which reaction shows the greatest heat change per gram of solid.
Chemistry 5070 · O Level · Experimental design
Experimental design — practice question
A student receives two bottles marked A and B, together with dilute hydrochloric acid. One bottle holds $1.00\,\text{g}$ of solid potassium carbonate, $\text{K}_2\text{CO}_3$. The other bottle contains $1.00\,\text{g}$ of solid potassium hydrogencarbonate, $\text{KHCO}_3$.