Unit 7-8 Classwork/Homework

What is the molarity of 2.5mol KCl in 1.0L of solutions?

• 1.0M
• 2.5M
• 1.5M

What is a solution that has the maximum amount of solute dissolved at a specific temperature and pressure?

• Supersaturated
• Saturated
• Unsaturated
• Undefined

When the solution is holding more solute than its maximum (by raising the temperature saturating the solution and then lowering the temperature) it is said to be

• Supersaturated
• Saturated
• Unsaturated
• Undefined

Tags

NGSS.HS-PS1-5

What is a solution that has the maximum amount of solute dissolved at a specific temperature and pressure?

• Supersaturated
• Saturated
• Unsaturated
• Undefined

Seawater contains sodium chloride and other dissolved salts. Identify the term that correctly describes those dissolved salts.

• mixtures
• solvent
• solute
• element

What is a solute?

• The substance that does the dissolving in a solution.
• The substance that is dissolved into the solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

What is a solvent?

• The substance that does the dissolving in a solution.
• The substance that is being dissolved in a solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

How do you calculate the molarity of a solution?

• By tasting it.
• Dividing the moles of solute by the L of  solution
• Dividing the moles of solute by the kg of  solvent
• By adding the sum of the molecular weight of the elements in the substance.

Calculate the molarity of 15.7g NaCl in 100.0ml of H₂O.

• 2.7 M
• 27 M
• 0.27 M

Using the graph from your remediation packet. Which substance is the most soluble at 10⁰C?

• KClO₃
• NaCl
• KI