Solution Conductivity

Which of the following will produce ions to conduct electricity when dissolved in water?

• CaCl₂

• NH₃

• CH₄

• P₂O₅

A beaker of uncovered salt water is left in the lab. What happens to the conductivity after a week?

• The conductivity decreases since the concentration decreases as the water evaporates

• The conductivity increases, since the concentration decreases as the water evaporates.

• The conductivity decreases, since the concentration increases as the water evaporates.

• The conductivity increases, since the concentration increases as the water evaporates.

Tags

NGSS.MS-ESS2-4

What happens when KBr is dissolved in water?

• Br - ions are attracted to positive K ions

• Br - ions are attracted to the oxygen atom of water

• K+ ions are attracted to the hydrogen atoms of water

• no attractions are involved

Tags

NGSS.MS-PS1-2

A conductivity probe is placed in a solution of water and an unknown solute. The bulb doesn't light up. What can you determine about the unknown solute?

• It is an ionic compound.

• It is a metallic compound.

• It is a molecular compound.

• Not enough information is given to answer this question.

the measure of a solution's ability to conduct electricity

• concentration

• conductivity

• solubility curve

• temperature

A homogeneous mixture in which the minor component (Solute) is uniformly distributed within the major component (solvent)

• solution

• solubility

• Acid

• Base

Which of the following solutions will have the highest conductivity?

• A) 0.1 M NaCl

• B) 0.1 M C_6H_{12}O_6

• C) 0.1 M CH_3OH

• D) 0.1 M NH_3

What is the effect of increasing temperature on the conductivity of a salt solution?

• A) Conductivity decreases

• B) Conductivity increases

• C) Conductivity remains the same

• D) Conductivity first increases then decreases

Tags

NGSS.MS-PS1-4

Which of the following is a strong electrolyte?

• A) H_2O

• B) NaCl

• C) CH_3COOH

• D) NH_3

A solution of sugar in water is tested for conductivity. What is the expected result?

• A) High conductivity

• B) Low conductivity

• C) No conductivity

• D) Variable conductivity