NSCI100 lab 4
NSCI 101/103
Lab 4: Acids and Bases
· On your own and without assistance, complete thisLab 4Answer Form and submit it via theAssignments Folder by the date listed on yourCourse Schedule (underSyllabus).
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1. What is a neutralization reaction?
2. Hydrochloric acid (HCl) is a strong acid. About what pH would you expect it to be?
2. Sodium hydroxide (NaOH) is a strong base. About what pH would you expect it to be?
Experiment 1: Acidity of Common Household Products
Table 2: Acid-Base Neutralization for Part 1, Steps 5 & 6
Test tube 1 |
Test tube 2 |
Standard |
|
Step 1 |
Add acid |
Add base |
Neutral |
Color |
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pH value |
Table 3: Acid-Base Neutralization for Part 1, Steps 8 & 9
Test tube 1 |
Test tube 2 |
Standard |
|
Step 1 |
Add base |
Add acid |
Neutral |
Color |
|||
pH value |
Table 4: Acidity and Alkalinity Testing for Household Products Data
Product |
Hypothesized pH |
Color of Litmus Paper |
Color of pH Paper |
Actual pH |
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1. Why did the grape juice change color when an acid or base was added?
2. You added a base, sodium bicarbonate, to test tube 1 that contained citric acid and an acid to test tube 2 that contained base. Why did the grape juice return to its original color?
3. Name 2 acids and 2 bases you often use.
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Solution: UMUC NSCI100 lab 4