Domain: Chemistry / lab_accident

turn: 1
modality: image
input: Generate a concise chemical laboratory bench scene: A substance is contained in a <correct and appropriate laboratory container type>. The substance must exhibit the following observable characteristics: <color + physical state (solid/liquid/gas) + form (powder/lump/crystal/solution, etc.) + optional luster/transparency; the name, chemical formula, or element symbols of the substance are prohibited>. The background should be a <laboratory environment: bench surface with outlines of basic equipment, avoid clutter and text labels>.
output: evaluation_points: 1. The container generated in the image is correct and is indeed a <brown glass reagent bottle with a ground glass stopper>.

2. The color and appearance (liquid, form) of the target substance conform to '<colorless, clear liquid>'. It should be a liquid, not a solid or gas.

3. The substance is stored correctly in the container. Concentrated nitric acid is typically stored in a brown glass bottle to protect it from light, and the bottle should be appropriately filled (e.g., not overflowing).

4. The background is a simple laboratory bench scene.

turn: 2
modality: text
input: Based on the appearance of the substance in the input image, and given that this substance is known to have the following properties: (1) It is a strong oxidizing agent. (2) It reacts vigorously with many metals, often producing a brownish-red gas. (3) It is miscible with water in all proportions. Which of the following substances is it most likely to be?

Options:
A. Concentrated Sulfuric Acid (H₂SO₄)
B. Concentrated Nitric Acid (HNO₃)
C. Acetic Acid (CH₃COOH)
D. Hydrochloric Acid (HCl)
E. None of the above
output: answer: B

turn: 3
modality: image
input: We will now refer to the substance you identified previously as the 'target substance'. The target substance can undergo the following reaction: 'It reacts with copper metal under ambient conditions, producing a gas and changing the color of the solution.' Please generate the state of the laboratory bench during this normal reaction (the experimental apparatus, the state of the substances, and the reaction phenomena should all be reasonable and self-consistent).
output: evaluation_points: 1. The selection, connection, and use of experimental apparatus are correct and match the reaction of <copper with concentrated nitric acid>. A typical setup might show a beaker or test tube, not necessarily a complex gas collection system, as the reaction is often demonstrated in an open container due to the toxic gas produced.

The target substance (concentrated nitric acid) is generated in the correct form (colorless liquid) in the correct location within the apparatus (e.g., in a beaker). The substance's color and clarity must match the description 'colorless, clear liquid' from Turn 1.

The reactant <copper metal> is generated with the correct color (reddish-brown), state (solid, likely as turnings or a piece), and location (immersed in or added to the acid).

4. The reaction phenomena conform to '<vigorous reaction with effervescence (bubbling), production of a brownish-red gas (nitrogen dioxide, NO₂), and the solution turning blue (from the formation of copper(II) ions)>'.

The picture background is a laboratory bench, consistent with the background style from Turn 1.

turn: 4
modality: text
input: If, in the normal reaction described above, the experimental setup was incorrectly modified by 'using a tightly sealed container to collect the gas produced', what is the most likely accident to occur?

Options:
A. The reaction stops immediately due to lack of oxygen.
B. Pressure buildup inside the sealed container leading to potential rupture or explosion.
C. The copper metal becomes passivated and stops reacting.
D. The nitric acid decomposes into harmless nitrogen and oxygen.
E. None of the above
output: answer: B

turn: 5
modality: text
input: Regarding the laboratory accident described in the previous question, what is the most correct immediate response?

Options:
A. Quickly open the sealed container to release the pressure.
B. Evacuate the immediate area, alert others, and allow the apparatus to cool down before approaching from a safe angle (e.g., behind a shield) to carefully vent pressure if possible, following standard operating procedures for pressure hazards.
C. Pour water over the sealed container to cool it and dissolve the gas.
D. Use a Bunsen burner to carefully heat the container and accelerate the reaction to completion.
E. None of the above
output: answer: B