Fe Cu Molar Reaction Lab

Observe the diagram. Which of the following BEST describes this image?

• The image correctly illustrates aqueous iron as water can dissolve anything.

• The image incorrectly illustrates aqueous iron because uncharged iron ATOMS cannot dissolve in water.

Tags

NGSS.HS-PS1-3

Predict the products of the following process:

Fe⁺²_(aq) + 2e^- -----------------> ????

Note: 2e^- are electrons from another atom

• Fe⁺⁴ would form and iron ion would remain aqueous

• Fe^-2 would form and iron ion would remain aqueous

• Fe with no charge would form and the iron would no longer be soluble in water; solid iron would form.

• none of these are correct

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In the reaction:

Fe_(s) + CuCl_2(aq)-----------> Cu_(s) + FeCl_{2 (aq)}

• The iron loses 2 electrons and the Cu⁺² gains 2 electrons

• the iron goes from zero charge to +2 charge

• The mole ratio in the balanced equation between all reactions and products is 1:1:1:1.

• all of the choices are correct.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

According to the reaction:

Fe_(s) + CuCl_{2 (aq)} ----------------> FeCl_2(aq) + Cu_(s)

Which sample(s) indicate excess Cu⁺² in solution?

• B only

• C only

• D only

• Samples B-D all indicate excess Copper +2 ions

Tags

NGSS.HS-PS1-2

According to the balanced equation:

Fe_(s) + CuCl_{2 (aq)} ----------------> FeCl_2(aq) + Cu_(s)

If 0.025 moles of Iron were used, then ______ moles of copper metal should be produced.

• 0.025

• 0

• 0.050

• it is impossible to predict this.

Tags

NGSS.HS-PS1-7

Which type of reaction best describes the Iron nail and copper chloride lab?

• combustion

• double replacement

• synthesis

• single replacement

Fe_(s) + CuCl_{2 (aq)} ----------------> FeCl_2(aq) + Cu_(s)

Predict what would occur if gold metal was placed in the copper chloride solution instead of Iron metal.

• a reaction would occur and gold metal would lose electrons as copper gained electrons.

• no reaction would occur as gold metal is less reactive than copper.

• it is impossible to predict these types of chemical reactions.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Molarity, symbolized as M, measures the number of moles of solute dissolved in 1 Liter of water. According to the image, which two samples contain the same Molarity, that is, number of particles dissolved in the sample amount of water?

• Solutions X and B

• Solutions X and A

• Solutions B and C

• Solutions X and C

Which best describes Sample A at the end of the reaction?

• Iron was the limiting react and Copper ion was in excess.

• Iron and Copper were both in excess

• Iron metal was in excess and Copper ion was the limiting reactant.

• it is impossible to determine what occurred by the image.

Tags

NGSS.HS-PS1-2

All tubes began with a 0.75 Molar solution of blue Copper II Chloride. Which student's group would have been given the smallest mass of iron Nail to begin with?

• Tube A because the solution is clear .

• Tube B because there is a light blue meaning the most copper ion reacted with iron.

• Tube D because the darkest blue color indicates very little copper ion reacted with iron.

Tags

NGSS.HS-PS1-2