Question 26
Find the pH values of common substances using Universal Indicator paper or solution. You can also use a digital pH meter, if available (Figure 8.17).
Examples of substances you can test are coffee, tea, carbonated drinks, fruit juice, bottled water, tap water, laundry detergent, dishwashing liquid and ketchup (Figure 8.18).
Draw a table to record your findings. Order the substances from the most acidic (has the lowest pH) to the most alkaline (has the highest pH).
Examples of substances you can test are coffee, tea, carbonated drinks, fruit juice, bottled water, tap water, laundry detergent, dishwashing liquid and ketchup (Figure 8.18).
Draw a table to record your findings. Order the substances from the most acidic (has the lowest pH) to the most alkaline (has the highest pH).
