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Chapter 4: Problem 10

Identify each of the following substances as a strong electrolyte, weak electrolyte, or nonelectrolyte: (a) \(\mathrm{Ba}\left(\mathrm{NO}_{3}\right)_{2},\) (b) \(\mathrm{Ne}\), (c) \(\mathrm{NH}_{3}\), (d) \(\mathrm{NaOH}\).

Short Answer

Expert verified
a) Ba(NO3)2 is a strong electrolyte, b) Ne is a nonelectrolyte, c) NH3 is a weak electrolyte, d) NaOH is a strong electrolyte.

Step by step solution

01

Determine Ba(NO3)2

Barium nitrate, \(\mathrm{Ba}\left(\mathrm{NO}_{3}\right)_{2}\), is a salt and salts are strong electrolytes. They dissociate completely into ions in aqueous solution. So, Ba(NO3)2 is a strong electrolyte.
02

Determine Ne

Neon, Ne, is a noble gas. Noble gases do not form ions nor do they dissolve in water. Therefore, Ne is a nonelectrolyte.
03

Determine NH3

Ammonia, NH3, is a weak base. Weak bases are classified as weak electrolytes because they partially dissociate into ions. So, NH3 is a weak electrolyte.
04

Determine NaOH

Sodium hydroxide, NaOH, is a strong base, and strong bases are strong electrolytes because they completely dissociate into ions in solution. Therefore, NaOH is a strong electrolyte.

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Most popular questions from this chapter

Iron(II) can be oxidized by an acidic \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) solution according to the net ionic equation \(\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}+6 \mathrm{Fe}^{2+}+14 \mathrm{H}^{+} \longrightarrow\) \(2 \mathrm{Cr}^{3+}+6 \mathrm{Fe}^{3+}+7 \mathrm{H}_{2} \mathrm{O}\) If it takes \(26.0 \mathrm{~mL}\) of \(0.0250 \mathrm{M} \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) to titrate \(25.0 \mathrm{~mL}\) of a solution containing \(\mathrm{Fe}^{2+},\) what is the molar concentration of \(\mathrm{Fe}^{2+} ?\)

A useful application of oxalic acid is the removal of rust \(\left(\mathrm{Fe}_{2} \mathrm{O}_{3}\right)\) from, say, bathtub rings according to the reaction \(\begin{aligned} \mathrm{Fe}_{2} \mathrm{O}_{3}(s)+& 6 \mathrm{H}_{2} \mathrm{C}_{2} \mathrm{O}_{4}(a q) \longrightarrow \\ & 2 \mathrm{Fe}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}^{3-}(a q)+3 \mathrm{H}_{2} \mathrm{O}+6 \mathrm{H}^{+}(a q) \end{aligned}\) Calculate the number of grams of rust that can be removed by \(5.00 \times 10^{2} \mathrm{~mL}\) of a \(0.100 \mathrm{M}\) solution of oxalic acid.

Carbon dioxide in air can be removed by an aqueous metal hydroxide solution such as \(\mathrm{LiOH}\) and \(\mathrm{Ba}(\mathrm{OH})_{2} .\) (a) Write equations for the reactions. (Carbon dioxide reacts with water to form carbonic acid.) (b) Calculate the mass of \(\mathrm{CO}_{2}\) that can be removed by \(5.00 \times 10^{2} \mathrm{~mL}\) of a \(0.800 \mathrm{M} \mathrm{LiOH}\) and a \(0.800 M \mathrm{Ba}(\mathrm{OH})_{2}\) solution. (c) Which solution would you choose for use in a space capsule and which for use in a submarine?

Which of the following are redox processes? (a) \(\mathrm{CO}_{2} \longrightarrow \mathrm{CO}_{3}^{2-}\) (b) \(\mathrm{VO}_{3} \longrightarrow \mathrm{VO}_{2}\) (c) \(\mathrm{SO}_{3} \longrightarrow \mathrm{SO}_{4}^{2-}\) (d) \(\mathrm{NO}_{2}^{-} \longrightarrow \mathrm{NO}_{3}^{-}\) (e) \(\mathrm{Cr}^{3+} \longrightarrow \mathrm{CrO}_{4}^{2-}\)

You are given a colorless liquid. Describe three chemical tests you would perform on the liquid to show that it is water.
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