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Chapter 8: Problem 32

Which of the following has greatest viscosity? (A) Hydrogen (B) Air (C) Water (D) Ammonia

Short Answer

Expert verified
Based on the analysis of states of matter and their relation to viscosity, Water (C), being a liquid, has the greatest viscosity among the given substances - Hydrogen, Air, and Ammonia, which are all gases.

Step by step solution

01

Identify solids, liquids and gases among the given substances

Among the given substances, Hydrogen (H2) and Air are gases, Water (H2O) is a liquid, and Ammonia (NH3) is also a gas. Those are the common states of the substances under normal pressure and temperature conditions.
02

Understand the general relationship between viscosity and states of matter

Viscosity is generally higher in liquids than gases because the molecules in liquids are more closely packed, resulting in stronger intermolecular forces that resist the movement of the substance. So, we will likely find the highest viscosity in a liquid rather than a gas.
03

Compare the given substances

Since we are looking for the substance with the greatest viscosity, we can first rule out the gases, Hydrogen, and Air. This leaves us with Water and Ammonia. However, it should be noted that Ammonia is a gas at room temperature, making it less viscous compared to Water, which is the only liquid given.
04

Determine the substance with the greatest viscosity

Based on the previous steps, we have concluded that Water, being a liquid, is more viscous than Hydrogen, Air, and Ammonia, which are gases. Therefore, Water (C) has the greatest viscosity among the given options. Final Answer: (C) Water

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