Domain: Chemistry / acid_reaction

turn: 1
modality: image
input: Generate a concise chemical laboratory bench scene: A white, fine, crystalline powder is contained in a clean, dry, and appropriately sized glass beaker. The background should be a simple laboratory bench with outlines of basic equipment, avoiding clutter and text labels.
output: evaluation_points: 1. The container generated is correct: a standard laboratory glass beaker.

2. The target substance's appearance matches the description: a white, fine, crystalline powder.

3. The substance is correctly contained in the beaker in a dry state, with an appropriate amount (e.g., filling about one-quarter to one-third of the beaker's volume).

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 has the following properties: (1) It is soluble in water, and its aqueous solution is alkaline. (2) It decomposes upon heating to release a colorless, odorless gas. (3) It reacts with acids to produce a different colorless, odorless gas. Which of the following is this substance most likely to be?

Options:
A. Sodium Chloride (NaCl)
B. Calcium Carbonate (CaCO3)
C. Sodium Carbonate (Na2CO3)
D. Potassium Nitrate (KNO3)
E. None of the above
output: answer: C

turn: 3
modality: image
input: We will now refer to the substance you identified earlier as the 'target substance'. Generate an image showing the phenomena at the same moment during the reaction in two test tubes placed side-by-side. The left test tube contains dilute hydrochloric acid (HCl, aq). The right test tube contains dilute sulfuric acid (H2SO4, aq). An identical amount of the target substance (in solid, powdered form) has been added to both acids simultaneously. The background should be a simple laboratory bench.
output: evaluation_points: 1. The image accurately depicts two test tubes, placed side-by-side (left and right). The liquid volume in each tube is safe and reasonable (e.g., half-full).

2. The solution colors are correct: both the left (dilute HCl) and right (dilute H2SO4) tubes contain colorless, clear solutions before reaction.

3. The phenomenon in the left tube (with HCl) matches the description: vigorous effervescence (bubbling) as a colorless gas is rapidly produced. The solid may be seen dissolving.

4. The phenomenon in the right tube (with H2SO4) matches the description: vigorous effervescence (bubbling) as a colorless gas is rapidly produced. The solid may be seen dissolving. (Note: For sodium carbonate, the reaction with both strong mineral acids is rapid and visually similar. The key difference for the next question is the nature of the gas and potential secondary reactions, which may not be visually distinct at this simple depiction level. The instruction for '明显差异' (obvious difference) is interpreted here as a potential difference in reaction rate or gas evolution intensity, which may be subtle. The core differentiating principle for Turn 4 is chemical, not necessarily a stark visual contrast in a static image.)

5. The image background is a simple laboratory bench, consistent with the background in the Turn 1 output image.

turn: 4
modality: text
input: Based on the difference in phenomena between the two test tubes in the input image (considering the chemical principles behind the reactions), what is the most fundamental reason for any observed or potential difference?

Options:
A. The left acid (HCl) is a stronger acid than the right acid (H2SO4).
B. The reaction in the right tube produces a gas that is less soluble in water.
C. The anion of the acid in the right tube can form a slightly soluble salt with sodium ions, potentially moderating the reaction.
D. The target substance reacts with sulfuric acid to produce sulfur dioxide gas, which has a different color.
E. None of the above.
output: answer: C