Molarity and Solubility

When no more sugar will dissolve in a glass of water, the solution is ___.

• unsaturated

• saturated

• supersaturated

• suspended

Solubility refers to the ____ of solute that can dissolve in a certain volume or mass of solvent, at a certain temperature.

• Volume
• Proportion
• Mass
• Particles

Tags

NGSS.MS-PS1-4

You and your friend have a contest to see who can make iced tea the fastest. Which of the following would NOT help you win?

• Cooling the water

• Using smaller crystals

• Heating the water

• Stirring quickly

Tags

NGSS.HS-PS1-5

An (a)______ is a compound that breaks apart in water, forming charged particles (ions) that can conduct electricity.

• electrolyte
• nonelectrolyte
• polar molecule
• non polar molecule

At 60 degrees Celsisu, 72g of NH4CL is dissolved in 100g of water, this solution is said to be:

• saturated
• unsaturated
• supersaturated
• stable

Tags

NGSS.HS-PS1-5

Which solute does not increase in solubility as temperature rises?

• NH₃
• NaNO₃
• KNO₃
• NaCl

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following usually makes a substance dissolve faster in a solvent?

• agitating the solution
• increasing the particle size of the solute
• lowering the temperature
• decreasing the number of particles

Tags

NGSS.HS-PS1-5

What is the molarity of 200 mL of solution in which 2.0 moles of sodium bromide is dissolved?

• 2.0 M
• 10 M
• 0.40 M
• 4.0 M

Which of the following substances is less soluble in hot water than in cold water and why?

• KBr, because it is a gas

• NaCl, because it is a solid

• NaNO_3, because it is a solid

• CO_2 , because it is a gas

Tags

NGSS.HS-PS1-5

Graph that shows the amount of solute that can be dissolved in 100 g of water at a certain temperature.

• Concentration curve

• Saturation curve

• Solubility curve

• Molarity curve