Life of Pi: Chemistry Concepts & Concentrations

A set of flashcards designed to help review key concepts related to concentrations and colligative properties in the context of 'Life of Pi' chemistry.

What is the formula for molality (m)?

Molality (m) is defined as the amount of solute (in moles) divided by the mass of the solvent (in kilograms).

Why does molality remain constant regardless of temperature?

Molality does not vary with temperature because it is based on masses, not volumes.

What does a 14% concentration by mass indicate?

A 14% concentration by mass means there are 14 grams of solute in every 100 grams of solution.

How is parts per million (ppm) calculated?

Parts per million (ppm) is calculated as mass solute / mass solution multiplied by 10^6.

What is a mole fraction?

The mole fraction (Xsolute) is the fraction of the moles of one component in the total moles of all components in the solution.

What impact do colligative properties have?

Colligative properties depend on the number of solute particles in a solution, affecting properties like vapor pressure and freezing point.

What does vapor pressure lowering refer to?

Vapor pressure lowering occurs when the vapor pressure of a solution is lower than that of the pure solvent due to the presence of a solute.

What happens when salt is added to icy roads?

Salt lowers the freezing point of the solution, allowing ice to melt at temperatures below 0 °C.

What is the effect of a non-volatile solute on vapor pressure?

The addition of a non-volatile solute reduces the rate of vaporization, resulting in a lower vapor pressure for the solution.

How is percent by mass calculated in a solution?

Percent by mass is calculated as (mass of solute / total mass of solution) x 100.