Questions from General Chemistry

Q: Calculate the new molarity when 150. mL of water is added

Calculate the new molarity when 150. mL of water is added to each of the following solutions. a. 125 mL of 0.200 M HBr b. 155 mL of 0.250 M Ca(C2H3O2)2 c. 0.500 L of 0.250 M H3PO4 d. 15 mL of 18.0...

Q: The solubility product of iron(III) hydroxide is very small

The solubility product of iron(III) hydroxide is very small: Ksp = 4 * 10-38 at 25 °C. A classical method of analysis for unknown samples containing iron is to add NaOH or NH3. This precipitates Fe(OH...

Q: Consider the reaction between 1.0 L of 3.0

Consider the reaction between 1.0 L of 3.0 M AgNO3(aq) and 1.0 L of 1.0 M CuCl2(aq), according to the equation: 2AgNO3(aq) + CuCl2(aq) ( 2AgCl(s) + Cu(NO3)2(aq) Which of the following will increase t...

Q: Consider the following reaction at some temperature: H2O( g

Consider the following reaction at some temperature: H2O( g) + CO( g) ⇌ H2( g) + CO2( g) K = 2.0 Some molecules of H2O and CO are placed in a 1.0-L container as shown b...

Q: An aqueous solution of ammonium sulfide is mixed with an aqueous solution

An aqueous solution of ammonium sulfide is mixed with an aqueous solution of iron(III) chloride. a. Write a balanced molecular equation, complete ionic equation, and net ionic equation for the two so...

Q: For a given reaction at a given temperature, the special ratio

For a given reaction at a given temperature, the special ratio of products to reactants defined by the equilibrium constant is always equal to the same number. Explain why this is true, no matter what...

Q: Suppose K = 4.5 * 10-3 at a

Suppose K = 4.5 * 10-3 at a certain temperature for the reaction PCl5(g) ⇌ PCl3(g) + Cl2(g) If it is found that the concentration of PCl5 is twice the concentration of PCl3, what must be the concentr...

Q: What volume of 0.250 M HCl is required to neutralize

What volume of 0.250 M HCl is required to neutralize each of the following solutions? a. 25.0 mL of 0.103 M sodium hydroxide, NaOH b. 50.0 mL of 0.00501 M calcium hydroxide, Ca(OH)2 c. 20.0 mL of 0...

Q: In general terms, what does the equilibrium constant for a reaction

In general terms, what does the equilibrium constant for a reaction represent? What is the algebraic form of the equilibrium constant for a typical reaction? What do square brackets indicate when we w...

Q: For each of the following solutions, the mass of solute taken

For each of the following solutions, the mass of solute taken is indicated, as well as the total volume of solution prepared. Calculate the normality of each solution. a. 15.0 g of HCl; 500. mL b. 4...