3. Results

We recorded the height of the green bean plants after they have germinated and have started to be watered with different dilutions of the sulphuric acid.

We observed that on average, the plants with lower dilutions grew the least, whereas the ones with the highest dilutions grew the most.

The plants in group A, which received a dilution of 0.001 molar, generally grew the most by the end of the experiment and they grew an average of one centimeter per day. The plants in group B, which received a dilution of 0.003 molar, generally grew an average of half a centimeter per day on average. The plants in group C, which received a dilution of 0.005 molar, hardly grew at all only with slight hight change. The plants in group D, which received a dilution of 0.007 molar, generally decreased in height by approximately one quarter centimeter per day on average. The plants in group E, the control, generally grew one and a half centimeter per day on average. One plant died in group D on March 14, 2014.

We observed that there is a significant difference between the plants that received different dilutions of the acid. As seen in the data below.

fig1.1


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