Question

During the lab, you will have access to a range of acids and bases as well as universal pH indicator paper. Think about how you can use these tools to develop a color chart for the red cabbage indicator. Then, write a hypothesis using the “if/then” format.

the answer for the hypothosis
\having a range of acids and bases to test

using pH paper to find pH

using the acids and bases to find cabbage indicator colors for different pH values

the word “calibrate”

Answer 1

If you can measure the pH of a range of acids and bases using a universal pH indicator, then you can use those values to calibrate a cabbage pH indicator.

please mark my answer as btainliest

Answer 2

Answer: To develop a colour chart indicator for the red cabbage indicator, use the universal pH indicator paper to calibrate the pH of the range of the acid and bases provided.

Explanation:

What is pH?

pH is a quantity to measure the acidity or the basicity of a given chemical.

What is universal pH indicator paper?

• Universal pH indicator paper is a special type of paper used in chemistry labs to calibrate the pH of a substance.
• The universal pH indicator paper comes with a scale showing a range from 0 to 14.
• The 7 on the scale represents a neutral substance.
• Compounds with pH less than 7 are acidic.
• Smaller the value, the more acidic is the substance.
• Compounds with a value greater than 7 are basic.

What is a red cabbage indicator?

• It is a purple coloured solution, which changes colour in acidic and basic medium.
• In an acidic medium the purple colour changes to red.
• In basic medium the colour changes to bluish-green.

Steps to develop a colour chart for the red cabbage indicator:

1. Finding pH of given acids and bases- Using the universal pH indicator calibrate(calculate) the pH of the acids and bases given.
2. Arranging in order of pH- depending on the calibrated values arrange the given acid and bases in the increasing order.
3. Developing a colour chart for the red cabbage indicator- From the values calculated and the order obtained find the colour change in red cabbage indicator. Use the colours obtained and the corresponding calibrated values to develop the chart.

Thus, the values calibrated using universal pH indicator paper are used to develop a chart for red cabbage indicator.