Universal Indicator Lab Report
To figure out the results, the Universal Indicator was used in order to help indicate what pH level the cabbage indicator was, for a specific colour. The colour range for the Universal Indicator from the experiment matched closely with the scale on the internet (Understanding Body pH Balance. (2012, January 07). Retrieved November 14, 2017, from https://docakilah.wordpress.com/2011/11/29/understanding-body-ph-balance/). It went from red, to green/yellow, then deep purple (pH 1, pH 7, pH 14). For the colour range of the red cabbage indicator, it went from red, to light purple, to bright yellow (pH 1, pH 7, pH 14). The Universal Indicator’s colour range seems common and similar to many other scales. A few examples are the red litmus paper,
the heat spectrum, and the visible light spectrum. The interesting thing with the red cabbage being used as an indicator is that its colour scale does not really correspond to the common scale. The colours for the middle section of the scale, and the end section of the scale could be considered switched (light purple [middle] to yellow [end]), compared to the more common scales (yellow [middle] to purple [end]). Though the cabbage’s spectrum colours may vary, and that it is still an effective tool when determining the pH value of a substance. The results acquired from this experiment were sufficiently accurate.
the heat spectrum, and the visible light spectrum. The interesting thing with the red cabbage being used as an indicator is that its colour scale does not really correspond to the common scale. The colours for the middle section of the scale, and the end section of the scale could be considered switched (light purple [middle] to yellow [end]), compared to the more common scales (yellow [middle] to purple [end]). Though the cabbage’s spectrum colours may vary, and that it is still an effective tool when determining the pH value of a substance. The results acquired from this experiment were sufficiently accurate.