Page 53 - E-LKM ACID BASE
P. 53
Lembar Kerja Mahasiswa - Asam Basa
Exercise 4
a. Answer the following questions about acid-base
indicators!
1. Write down other examples of acid-base indicators! Explain!
2. Known route of indicator color change
A solution will give a yellow color with indicators of methyl
orange and methyl red, and give a blue color with an
indicator of bromtimol blue. Meanwhile, with colorless
phenolphthalein indicators. Estimate the pH value of the
solution!
b. Answer the questions below correctly!
4
2
1. Look for some antacids and write down the reaction in
the gastric juice?
2. When sulfuric acid, H SO , is added to water, what makes
the resulting aqueous solution corrosive?
3. Look at figure 28. How does adding CO to the oceans
2
cause a decrease in the concentration of carbonate
2-
ions, CO ?
3
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Bahasa Inggris Kimia (PKIM3139) 49
