Question

writing and balancing chemical equations
quiz complete
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which symbol can be used to indicate the pressure at which a chemical reaction is carried out?
○ 25℃→
○ △→
○ 2 atm→
○ pt→

Explanation:

• "25°C" indicates reaction temperature, not pressure.
• "$\triangle$" denotes heating, not pressure.
• "2 atm" specifies atmospheric pressure, the correct pressure indicator.
• "Pt" represents a platinum catalyst, not pressure.

Answer:

C. $\underline{\text{2 atm}}
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