Which compound is a chemical component of the smoke tubes used in ventilation studies?

Which compound is a chemical component of the smoke tubes used in ventilation studies?

• A. Vanadium pentoxide
• B. Titanium tetrachloride
• C. Ammonium chloride
• D. Diotylphthalate

Answer: (B)

When studying airflow in ventilation, you need a substance that creates a visible plume as soon as it’s released into the air. Titanium tetrachloride fits this role because it reacts with moisture in the air to produce a dense white smoke made of tiny particles. The hydrolysis reaction TiCl4 + 2 H2O → TiO2 (solid) + 4 HCl (gas) happens rapidly at room condition, giving a clear, immediate plume that lets you trace air movement, leaks, and mixing patterns. Vanadium pentoxide is primarily a catalytic oxide and isn’t used to generate smoke visuals in these studies. Ammonium chloride can produce fumes but isn’t the standard smoke generator for HVAC testing, and diotylphthalate is a plasticizer with no smoke-generating role in this context. So titanium tetrachloride is the appropriate component for smoke tubes in ventilation studies.

When studying airflow in ventilation, you need a substance that creates a visible plume as soon as it’s released into the air. Titanium tetrachloride fits this role because it reacts with moisture in the air to produce a dense white smoke made of tiny particles. The hydrolysis reaction TiCl4 + 2 H2O → TiO2 (solid) + 4 HCl (gas) happens rapidly at room condition, giving a clear, immediate plume that lets you trace air movement, leaks, and mixing patterns.

Vanadium pentoxide is primarily a catalytic oxide and isn’t used to generate smoke visuals in these studies. Ammonium chloride can produce fumes but isn’t the standard smoke generator for HVAC testing, and diotylphthalate is a plasticizer with no smoke-generating role in this context. So titanium tetrachloride is the appropriate component for smoke tubes in ventilation studies.