Acids Bases and the pH Scale

In this lab, you will gain and understanding of the basic differences between the properties of acids and bases Know the role of hydrogen and hydroxide ions in acids and bases. Comprehend the nature of the pH scale with regards to acid and base strength. Students will examine the effects of acids and bases on several chemical pH indicators, determine the pH of several common household materials, and use the knowledge gained to determine the composition of four unknown clear solutions.

There are enough materials for 15 groups. Teacher's manual and student copymasters are included.

Kit Includes:

• 1 Deionized Water, 25ml
• 1 Dilute Acid (0.1M HCl), 25ml
• 1 Dilute Base (0.1M NaOH), 25ml
• 1 0.5% Litmus, 25ml
• 1 0.02% Methyl Red, 25ml
• 1 0.5% Bromothymol Blue, 25ml
• 1 1.0% Phenolphthalein, 25ml
• 1 Vinegar, 25ml
• 1 Household Ammonia, 25ml
• 1 Soap Solution, 25ml
• 1 Filtered Water, 25ml
• 1 Vitamin C Solution, 25ml
• 2 Wide-Range pH Test Strips, pk 50
• 1 Unknown Solution #1, 25ml (Water)
• 1 Unknown Solution #2, 25ml (Dilute Base)
• 1 Unknown Solution #3, 25ml (Phenolphthalein)
• 1 Unknown Solution #4, 25ml (Dilute Acid)
• 15 Reaction Trays

DOT Info: Small quantity exemption 173.4. THIS PACKAGE CONFORMS TO 49 CFR 173.4 for domestic highway or rail transport only

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