8 What is actually diffusing into the Hint It causes the col

8. What is actually diffusing into the (Hint It causes the color change of the agar agar bl blocks] 9. Keep the following questions in mind when decid A. The agar blocks start with a concentration ofH ions of 1 x 107. If you calculate the pH, is it acidic, basic dkneutraT2 B. What other lias concentration of H as the agar blocks at the beginning substance a similar co of the experiment? C. If the concentration of H ions a the concentration of H+ ions inside of a cell equals outside of a cell, what happens to the diffusion of H D. Therefore, the color of the agar block will be 10. What is the purpose of a trial in an experiment? 11. Explain what will be put in each beaker, including solution and size of agar cubes. #1: Beaker #2 Beaker #3: Beaker ff4: 12. To save time you will do more than one trial of the experiment at the same time. The beakers numbered are the trials and the beaker numbered is the control. 13. A mer tells you the number of minutes and seconds that have passed, but you must record the number of minutes in Table 2. 7 min 15 sec min

Solution

1. Diffusion is a process that can be defined as the net movement of particles from a region of higher concentration to a region with lower concentration. In this experiment, the immersion of agar block into sodium hydroxide solution is to demonstrate the process of diffusion. The agar already contain phenolphthalein indicator, which changes color from colorless to pink where there is presence of sodium hydroxide solution.

2. pH is defined as the negative logarithm of hydrogen ion concentration.

pH= -log [H⁺]

here, [H⁺] = 1 X 10^-7

pH = - log[1 X 10^-7 ]

pH= 7, which indicates neutral.

3. Water, it is the most common substance that has a pH of 7 i.e. neutral.

4. If the concentration of H⁺ ions inside the cells becomes equal to the concentration outside the cell, no diffusion will occur as there is no concentration gradient.