Molarity and Solution Stoichiometry

Which combination will produce a precipitate?

• NaCl (aq) and HC₂H₃O₂ (aq)
• NaOH (aq) and Fe(NO₃)₂ (aq)
• AgNO₃ (aq) and Ca(C₂H₃O₂)₂ (aq)
• NH₄OH (aq) and HCl (aq)

When aqueous solutions of AgNO₃ and NaI are mixed, AgI precipitates. The balanced net ionic equation is

• Ag⁺ (aq) + NO₃^- (aq)   >  AgNO₃ (aq)
• AgNO₃ (aq) + NaI (aq)   >   AgI (s) + NaNO₃ (aq)
• Ag⁺ (aq) + I^- (aq)   >    AgI (s)
• Ag⁺ (aq) + NO₃^- (aq) > AgNO₃ (s)

Tags

NGSS.HS-PS1-7

How many grams of H₃PO₄ are in 175 mL of a 3.5 M solution of H₃PO₄?

• 60
• 4.9
• 612
• 20

How many moles of BaCl₂ are formed in the neutralization of 393 mL of 0.171 M Ba(OH)₂ with aqueous HCl?

• 1.15
• 0.0672
• 0.0336
• 2.30

Tags

NGSS.HS-PS1-7

What mass in (g) of AgBr is formed when 35.5 mL of 0.184 M AgNO₃ is treated with an excess of aqueous hydrobromic acid?

• 53.6
• 1.44
• 1.23
• 34.5

25mL of 1M HCl neutralizes 20.mL of NaOH. What is the concentration of the NaOH?

• 0.8 M
• 1 M
• 1.25 M

Tags

NGSS.HS-PS1-7

A 50.0 mL sample of 1.0 M Ca(OH)₂ is neutralized by 50.0 mL of HCl solution. Calculate the molarity of the HCl solution.

• 1.0 M
• 0.50 M
• 2.0 M 
• 4.0 M

Tags

NGSS.HS-PS1-7

How many grams of silver chromate will be formed when 150. mL of 0.500 M silver nitrate are added to excess 100. mL of 0.400 M potassium chromate?

• 12.4 grams

• 28.8 grams

• 6.2 grams

• 125.7 grams

Tags

NGSS.HS-PS1-7

How many grams of solid calcium hydroxide, Ca(OH)2, are required to react with 350 mL of 0.40 M HCl?

• 10.38 grams

• 2.62 grams

• 5.19 grams

• 0.4 grams

25.0 mL of 0.350 M NaOH are added to an excess of copper (II) sulfate. How many grams of copper (II) hydroxide will be produced?

• 5.44 g

• 0.427 g

• 0.854 g

• 8.54 g

Tags

NGSS.HS-PS1-7