Questions from General Chemistry

Q: When aqueous solutions of lead(II) ion are treated with

When aqueous solutions of lead(II) ion are treated with potassium chromate solution, a bright yellow precipitate of lead(II) chromate, PbCrO4, forms. How many grams of lead chromate form when a 1.00-g...

Q: Aluminum ion may be precipitated from aqueous solution by addition of hydroxide

Aluminum ion may be precipitated from aqueous solution by addition of hydroxide ion, forming Al(OH)3. A large excess of hydroxide ion must not be added, however, because the precipitate of Al(OH)3 wil...

Q: The concepts of acid–base equilibria were developed in this chapter

The concepts of acid–base equilibria were developed in this chapter for aqueous solutions (in aqueous solutions, water is the solvent and is intimately involved in the equilibria). However, the Brønst...

Q: The “Chemistry in Focus” segment Water, Water Everywhere,

The “Chemistry in Focus” segment Water, Water Everywhere, But . . . discusses the desalinization of ocean water. Explain why many salts are soluble in water. Include molecular-level diagrams in your a...

Q: Strong bases are bases that completely ionize in water to produce hydroxide

Strong bases are bases that completely ionize in water to produce hydroxide ion, OH-. The strong bases include the hydroxides of the Group 1 elements. For example, if 1.0 mole of NaOH is dissolved per...

Q: A sample of sodium hydrogen carbonate solid weighing 0.1015 g

A sample of sodium hydrogen carbonate solid weighing 0.1015 g requires 47.21 mL of a hydrochloric acid solution to react completely. HCl(aq) + NaHCO3(s) / NaCl(aq) + H2O(l) + CO2(g) Calculate the mol...

Q: Despite HCl’s being a strong acid, the pH of 1.

Despite HCl’s being a strong acid, the pH of 1.00 * 10-7 M HCl is not exactly 7.00. Can you suggest a reason why?

Q: What volume of 1.00 M NaOH is required to neutralize

What volume of 1.00 M NaOH is required to neutralize each of the following solutions? a. 25.0 mL of 0.154 M acetic acid, HC2H3O2 b. 35.0 mL of 0.102 M hydrofluoric acid, HF c. 10.0 mL of 0.143 M ph...

Q: What volume of 0.101 M HNO3 is required to neutralize

What volume of 0.101 M HNO3 is required to neutralize each of the following solutions? a. 12.7 mL of 0.501 M NaOH b. 24.9 mL of 0.00491 M Ba(OH)2 c. 49.1 mL of 0.103 M NH3 d. 1.21 L of 0.102 M KOH...

Q: Consider the exothermic reaction CO(g) + 2H2(

Consider the exothermic reaction CO(g) + 2H2(g) ⇌ CH3OH(l) Predict three changes that could be made to the system that would decrease the yield of product over that produced by a system in which no c...