{"task": {"agent_timeout": 3600, "task": "82", "verifier_timeout": 3600, "instruction": "What is the correct answer to this question: \nWe dilute 20.00 cm3 0.05 M acetic acid with 20.00 cm3 water, then titrate the resulting solution with 0.1M NaOH (25 \u00b0C). What will be the value of pH at 25% titration and at the equivalence point? The Ka of acetic acid is 1.85x10^-5.\n\nChoices:\n  (A) 3.17; 6.73  \n  (B) 4.26; 8.52\n  (C) 4.73; 7.00\n  (D) 4.57; 6.92  \n\nLet's think step by step:\n\n[First, reason through the problem carefully. Consider all relevant concepts, formulas, and principles. Break down complex problems into manageable steps. Evaluate each answer choice critically.]\n\nBased on your reasoning above, determine the single, most likely answer choice. Then write ONLY the letter of your final answer (A, B, C, or D) to `/app/answer.txt`.\n\n**Important:**\n- This is a challenging graduate-level question in biology, physics, or chemistry\n- Do not try to solve the question in a single step. Break it down into smaller steps.\n- You should ONLY interact with the environment provided to you AND NEVER ASK FOR HUMAN HELP.\n- The answer file must contain only a single uppercase letter (A, B, C, or D) with no additional text or explanation\n- You can show your work and reasoning before writing the final answer, but the file `/app/answer.txt` should contain only the letter", "memory": "", "runnable": false, "difficulty": "difficult", "language": "", "cpus": "", "instruction_truncated": false, "category": "reasoning", "compose": false, "has_solution": true, "oracle": null, "docker_image": "", "taskset": "gpqa-diamond", "tags": ["gpqa", "multiple-choice", "chemistry", "chemistry (general)"]}, "runs": []}