Chapter 4: 4.3 CYL (page 183)
Which solution could be used to precipitate barium ion Ba2+, in a water sample, Sodium chloride, sodium hydroxide, or sodium sulfate. What is the formula for the expected precipitate?
Sodium Sulfate is used to precipitate a barium ion.
The formula for the expected precipitate is BaSO4.
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What volume of 0.0105-M HBr solution is required to titrate 125 mL of a 0.0100-MCa(OH)2 solution?
Ca(OH)2(aq) + 2HBr(aq)⟶CaBr2(aq) + 2H2 O(l)
A sample of gallium bromide, GaBr2, weighing 0.165 g was dissolved in water and treated with silver nitrate, AgNO3, resulting in the precipitation of 0.299 g AgBr. Use these data to compute the %Ga (by mass) GaBr2.
Complete and balance each of the following oxidation-reduction reactions,such that it results in the highest possible oxidation state for the oxidized atoms.
(a) \(Al\left( s \right) + {F_2}\left( g \right) \to \)
(b) \(Al\left( s \right) + CuB{r_2}\left( {aq} \right) \to \) (single displacement)
(c) \({P_4}\left( s \right) + {O_2}\left( g \right) \to \)
(d) \(Ca\left( s \right) + {H_2}O\left( l \right) \to \) (products are a strong base and a diatomic gas)
How many molecules of C2H4Cl2 can be prepared from 15 C2H4molecules and 8 Cl2molecules?
In an acidic solution hydrogen peroxide reacts with Fe+2 to produce Fe+3 and water. Write a balanced equation for this reaction.
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