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Chapter 4: Q4.5P (page 140)

What occurs on the molecular level when an ionic compound dissolves in water?

Short Answer

Expert verified

When an ionic compound dissolves in water it becomes dissociated polar part gets attracted toward the water molecule.

Step by step solution

01

 Step 1: Identification of the dissociation of ionic compounds

When ionic compounds dissolve in water, it dissociates into ions by breaking their ionic bond when the strong electrostatic force of attraction generates by the molecules of water and ionic compound since both the ionic and water molecules are polar in nature and the attraction between the ions and water molecules is much stronger than a compound itself.

02

Determine the solubility of ionic compounds in water molecules

Now the molecules of water surround the ions of the ionic compounds to stabilize the ion in such a way that the negative charge of water surrounds positive ions and the negative part surrounds the positive ions as shown in fig given below:

This states that the ionic compound dissolve in the water molecules.

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Most popular questions from this chapter

Do either of the following reactions go to completion? If so, what factor(s) cause(s) each to do so?

  1. MgSO3s+2HCIaq鈫�MgCI2aq+SO2g+H2O
  2. 3BaOH2aq+2H3PO4aq鈫�Ba3PO42s+6H2OI

When each of the following pairs of aqueous solutions is mixed, does a precipitation reaction occur? If so, write balanced molecular, total ionic, and net ionic equations.

(a) Potassium chloride + iron (III) nitrate

(b) Ammonium sulfate + barium chloride

The flask represents the products of the titration of 25mL of sulfuric acid with 25mL of sodium hydroxide.

(a) Write balanced molecular, total ionic, and net ionic equations for the reaction.

(b) If each orange sphere represents 0.010 mol of sulfate ion, how many moles of acid and of base reacted?

(c) What are the molarities of the acid and the base?

The active compound in Pepto-Bismol contains C, H, O, and Bi.

(a) When 0.22105 g of it was burned in excess O2, 0.1422 g of bismuth(III) oxide, 0.1880 g of carbon dioxide, and 0.02750 g of water were formed. What is the empirical formula of this compound?

(b) Given a molar mass of 1086 g/mol, determine the molecular formula.

(c) Complete and balance the acid-base reaction between bismuth(III) hydroxide and salicylic acid (HC7H5O3), which is used to form this compound.

(d) A dose of Pepto-Bismol contains 0.600 mg of the active ingredient. If the yield of the reaction in part (c) is 88.0%, what mass (in mg) of bismuth(III) hydroxide is required to prepare one dose?

Which ions do not appear in a net ionic equation? Why?
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