Question 50
A student set up three boiling tubes on a rack with different volumes of hydrochloric acid and distilled water as shown in the table. He added a piece of magnesium ribbon to each boiling tube and recorded the time taken for the magnesium to dissolve.
|Boiling tube number|1|2|3|
|---|---|---|---|
|Volume of hydrochloric acid in ml|10|25|50|
|Volume of distilled water added in ml|40|25|0|
|Time taken for magnesium ribbon to dissolve in s|50|20|10|
In which boiling tube is the hydrochloric acid the most concentrated?
|Boiling tube number|1|2|3|
|---|---|---|---|
|Volume of hydrochloric acid in ml|10|25|50|
|Volume of distilled water added in ml|40|25|0|
|Time taken for magnesium ribbon to dissolve in s|50|20|10|
In which boiling tube is the hydrochloric acid the most concentrated?
