Pertanyaan
2. 100 mL of 0.004 M H_(2)SO_(4) solution is mixed with 100 mL of 0.002 M HCI solution, resulting in a pH of the mixture __ 3.Determine pH of tl [5] [5]
Solusi
3.9
(249 Suara)
Roha
profesional ยท Tutor selama 6 tahun
Jawaban
The correct answer is **2.4**. Here's how to calculate the pH:1. **Calculate the moles of H+ ions from each acid:** - H2SO4: 0.004 M * 0.1 L * 2 (since it has 2 H+ ions) = 0.0008 moles H+ - HCl: 0.002 M * 0.1 L = 0.0002 moles H+2. **Calculate the total moles of H+ ions:** - 0.0008 moles + 0.0002 moles = 0.001 moles H+3. **Calculate the total volume of the solution:** - 100 mL + 100 mL = 200 mL = 0.2 L4. **Calculate the concentration of H+ ions in the mixture:** - 0.001 moles / 0.2 L = 0.005 M5. **Calculate the pH:** - pH = -log[H+] = -log(0.005) = **2.4**