CCU2 CoL Molarity and Dilution

Multiple Choice

Molarity is measured in

• moles per kg
• mols per L
• moles per kJ
• moles per mL

Multiple Choice

What is the molarity of 3 mole of hydrochloric acid in 3 L of water.

• 3

• 1

• 6

• 9

Multiple Choice

How many grams of Cu(NO3)2 are needed to make 289 milliliters of a 0.300 M Cu(NO₃)₂ solution?

What is the name of the solute?

• Copper(II)Nitrate

• Copper(II)Nitride

• Copper(II)Nitrite

• Monocopper Dinitrate

Drag and Drop

How many grams of Cu(NO₃)₂ are needed to make 289 milliliters of a 0.300 M Cu(NO₃)₂ solution?



Molar mass of copper(II)Nitrate = 187g

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What will be the final volume of a solution containing 45.7 g of NaOH to make a 0.5 M solution?

(note: mm of NaOH = 40 grams)

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For the penny lab , I needed to dilute 12M HCl to 6M HCl

I used the 1000 ml volumetric flask

$$McVc=\ MdVd$$

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12

?

6

1000

18

2

Multiple Choice

For the penny lab , I needed to dilute 12M HCl to 6M HCl

I used the 1000 ml volumetric flask

$$McVc=\ MdVd\ \ \ \ \ ...\ \ 12\cdot\ Vc\ =\ 6\cdot1000$$

​What volume of the concentrated should I measure out?

• 500 ml

• 2 ml

• 6000 ml

• 12 ml

• 18 ml

dilution

• decreasing the concentration of a solute in a solution

• increasing solvent to solute ratio