Mix 50 mL of 0.10 M HCl with 50 mL of 0.20 M HCl. Final pH ≈
- A
1.30
- B
0.7
- C
1.0
- Dcheck_circle
1.18
Explanation
Total H⁺ = 0.05·0.1 + 0.05·0.2 = 0.015 mol in 0.10 L → 0.15 M → pH ≈ 0.82. Closest given is 1.18 only if labeled differently; correct exact: pH ≈ 0.82. (Choose 0.7 if rounding loosely.) Best of given: 0.7.