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Open Ended

Explain the difference in solubility between zinc hydroxide and aluminum hydroxide in excess sodium hydroxide.

Multiple Choice

What color precipitate is formed when Al3+ reacts with hydroxide ions?

• Red

• White

• Blue

• Green

Multiple Choice

What is the equation for the reaction of Fe2+ with hydroxide ions?

• Fe(OH)2

• Fe(OH)3

• Zn(OH)2

• Al(OH)3

Multiple Choice

Balance the equation with polyatomic ions: $$\text{BaCl}_2 + \text{Na}_2\text{SO}_4 \rightarrow \text{BaSO}_4 + \text{NaCl}$$

• $$\text{BaCl}_2 + \text{Na}_2\text{SO}_4 \rightarrow \text{BaSO}_4 + 2\text{NaCl}$$

• $$2\text{BaCl}_2 + \text{Na}_2\text{SO}_4 \rightarrow 2\text{BaSO}_4 + 2\text{NaCl}$$

• $$\text{BaCl}_2 + 2\text{Na}_2\text{SO}_4 \rightarrow \text{BaSO}_4 + 4\text{NaCl}$$

• $$\text{BaCl}_2 + \text{Na}_2\text{SO}_4 \rightarrow 2\text{BaSO}_4 + \text{NaCl}$$

Multiple Choice

Oxides/Hydroxides (OH^-)

• Soluble with no exceptions

• Insoluble at all times

• Insoluble except with Cl, I, C

• Insoluble except with Ca, Ba, Sr

Multiple Choice

What is the equation for the precipitation reaction between silver ions and chloride ions?

• Ag + Cl- → AgCl

• Ag+ + Cl- → AgCl

• Ag+ + Cl → AgCl

• Ag + Cl → AgCl