Chapter 4

What precipitate forms when you mix lead (II) nitrate with sodium chloride?

• sodium nitrate 
• lead (II) chloride 
• sodium lead
• chloride nitrate 

Which is the correct net ionic equation for the reaction of AgNO₃ and CaCl₂?

• Ca²⁺(aq) +  2Cl^- (aq) → CaCl(s)
• Ag⁺(aq)  +  Cl^- (aq) → AgCl(s)
• Ag +  Cl  →  AgCl
• Ag⁺  +  Ca²⁺   →Ag₂Ca (s)

Tags

NGSS.HS-PS1-7

In this equation,
CuCl₂ + NaOH  → Cu(OH)₂ + NaCl
Which product is insoluble?

• copper(II) hydroxide
• sodium chloride
• sodium hydroxide
• copper(II) chloride

What are the spectator ions in this reaction?
CuCl₂(aq) + NaOH(aq) → Cu(OH)₂(s) + NaCl(aq)
 

• Cu²⁺ and OH^1-
• Na²⁺ and Cl^2-
• Na¹⁺ and Cl^1-
• Na¹⁺ and OH^1-

Tags

NGSS.HS-PS1-7

Define: Net Ionic Equation

• a balanced chemical equation in which all the reactants and products are given by their chemical formulae.

• a chemical equation that shows all soluble species broken into their respective ions.

• a chemical equation showing only the species which are actively involved in the reaction.

Tags

NGSS.HS-PS1-7

Identify the complete ionic reaction for products of this reaction: (final answer is not balanced)

HCl + Mg(OH)₂ →

• → MgCl₂ + H₂O_(l)

• → Mg²⁺ + Cl^-1 + H₂O_(l)

• → Mg²⁺ + Cl^-1 + H⁺¹ + O^2-

• → MgCl₂ + H₂O_(l) + CO_2(g)

What coefficient should be used to make the following equation balanced?
N₂+O₂--> _NO 

• 1
• 2
• 3
• 4

How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl₂ + H₂

• 1
• 2
• 3
• 4

Balance this equation

_Al +_HCl --> _H₂ +_AlCl₃

• 2,6,3,2

• it's already balanced

• 4,12,3,4

• 2,1,4,5

What are the coefficients that would properly balance this equation?

__Al + __O₂--> __Al₂O₃

• 4,1 --> 2

• 4,3 --> 4

• 3,4 --> 1

• 4,3 --> 2