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Mobile App Problem 98
Predict the type of reaction (if any) that occurs between each pair of substances. Write balanced molecular equations for each. If no reaction occurs, write NO REACTION. (a) aqueous hydrochloric acid and aqueous copper(II) nitrate (b) liquid pentanol \(\left(\mathrm{C}_{5} \mathrm{H}_{12} \mathrm{O}\right)\) and gaseous oxygen (c) aqueous ammonium chloride and aqueous calcium hydroxide (d) aqueous strontium sulfide and aqueous copper(II) sulfate
Problem 100
Classify each reaction in as many ways as possible. (a) \(\mathrm{NaCl}(a q)+\mathrm{AgNO}_{3}(a q) \longrightarrow\) \(\mathrm{AgCl}(s)+\mathrm{NaNO}_{3}(a q)\) (b) \(2 \mathrm{Rb}(s)+\mathrm{Br}_{2}(g) \longrightarrow 2 \mathrm{RbBr}(s)\) (c) \(\mathrm{Zn}(s)+\mathrm{NiBr}_{2}(a q) \longrightarrow \mathrm{Ni}(s)+\mathrm{ZnBr}_{2}(a q)\) (d) \(\mathrm{Ca}(s)+2 \mathrm{H}_{2} \mathrm{O}(l) \longrightarrow \mathrm{Ca}(\mathrm{OH})_{2}(a q)+\mathrm{H}_{2}(g)\)
Problem 103
What solution can you add to each cation mixture to precipitate one cation while keeping the other cation in solution? Write a net ionic equation for the precipitation reaction that occurs. (a) \(\mathrm{Fe}^{2+}(a q)\) and \(\mathrm{Pb}^{2+}(a q)\) (b) \(\mathrm{K}^{+}(a q)\) and \(\mathrm{Ca}^{2+}(a q)\) (c) \(\mathrm{Ag}^{+}(a q)\) and \(\mathrm{Ba}^{2+}(a q)\) (d) \(\mathrm{Cu}^{2+}(a q)\) and \(\mathrm{Hg}_{2}{ }^{2+}(a q)\)
Problem 104
What solution can you add to each cation mixture to precipitate one cation while keeping the other cation in solution? Write a net ionic equation for the precipitation reaction that occurs. (a) \(\mathrm{Sr}^{2+}(a q)\) and \(\mathrm{Hg}_{2}{ }^{2+}(a q)\) (b) \(\mathrm{NH}_{4}^{+}(a q)\) and \(\mathrm{Ca}^{2+}(a q)\) (c) \(\mathrm{Ba}^{2+}(a q)\) and \(\mathrm{Mg}^{2+}(a q)\) (d) \(\mathrm{Ag}^{+}(a q)\) and \(\mathrm{Zn}^{2+}(a q)\)
Problem 105
A solution contains an unknown amount of dissolved calcium. Addition of \(0.112 \mathrm{~mol}\) of \(\mathrm{K}_{3} \mathrm{PO}_{4}\) causes complete precipitation of all of the calcium. How many moles of calcium were dissolved in the solution? What mass of calcium was dissolved in the solution?
