Why Is Calcium Chloride, , More Effective at Melting

question 7

Multiple Choice

Why is calcium chloride, , more effective at melting ice than sodium chloride, NaCl?

• A) Calcium ions are both larger and more highly charged and thus more effective in breaking the ice crystal structure.
• B) Calcium ions are smaller than sodium ions and thus more able to get in the way of the water molecules attempting to form the solid state lattice.
• C) Calcium chloride produces three ion particles while sodium chloride produces only two. Greater numbers of ions are more effective at decreasing the number of water molecules entering the solid phase.
• D) Sodium ion is a natural water softener and therefore not as effective in inhibiting the formation of the solid state of water from the liquid.

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Definitions:

Shallow Deposits

Geological accumulations of minerals, sediments or other materials that are located near the surface of the Earth.

Separate the Metal

The process of extracting a metal from its ore or mixture, often involving physical or chemical separation techniques.

Outermost Zone

A term typically referring to the furthest or most remote area within a particular boundary or geographical region.

Metamorphic Rock

Rock formed from the transformation of existing rock types through high pressure, high temperature, or both, without melting into liquid magma.