Pre-AP CHEM Unit 10 Days 3-4 Review

What is the molarity of a 3.244 L solution that is made from 12.75 g of NaCl? 

• 0.06725M
• 3.930M
• 0.2544M
• 14.89M

How much of NaCl is in 1.94 L of 0.500 M NaCl?

• 0.970 mol
• 0.258 mol
• 3.88 mol
• 56.77 mol

Tags

NGSS.HS-PS1-7

What volume of a 0.529 M solution of HBr is needed for a reaction that requires 42.0 g of HBr?

• 0.981L
• 79.4L
• 1.06L
• 22.2L

If 60.0 mL of a 1.5 M HCl solution is put into a flask and diluted with water to make 2.0 L of solution, what is the molarity of the final solution?

• 0.045 M
• 0.080 M
• 0.75 M
• 0.020 M 

If 60.0 mL of a 1.50 M HCl solution is put into a flask and diluted with water to make a 0.045M solution, what volume of water was added to the original solution?

• 2.00x10³ mL
• 90.0 mL
• 1940 mL
• 2060 mL

Which one of the following salts is least soluble in water? 

• CaBr₂
• PbSO₄
• LiCl
• Na₂SO₄

A variety of ions including Na⁺, K⁺, NH₄⁺, Pb²⁺, Fe²⁺, NO₃⁻, Cl⁻, Br⁻, S²⁻, and CO₃²⁻ are mixed in a beaker of water. If you analyzed the precipitates, which substances would you expect to find?

• FeCl₂ and KCl 
• PbCO₃ and NaCl
• FeS and Na₂CO₃ 
• PbS and FeCO₃

Given the reactants below and your knowledge of solubility rules, which equation shown represents the net ionic equation? 
potassium phosphate(aq) + lead(II) nitrate(aq) 

• A
• B
• C
• D

Identify the spectator ion(s) in the equation shown.

• Na⁺, Cl⁻
• Na⁺, CO₃²⁻ 
• Ca²⁺, CO₃²⁻ 
• Ca²⁺, Cl⁻ 

Complete and balance the equation
FeCl₃(aq) + KOH(aq) →
that represents a precipitation reaction.

• A
• B
• C
• D