General Chemistry Tutorials
Significant Figures: These are simple exercises requiring you to identify the number of significant figures in a variety of integer and decimal numbers. Scientific & Decimal Notation: A number will be shown in either exponential or decimal notation; you are required to convert to the other format.
Significant Figures: These are simple exercises requiring you to identify the number of significant figures in a variety of integer and decimal numbers.
Scientific & Decimal Notation: A number will be shown in either exponential or decimal notation; you are required to convert to the other format.
Atomic Configuration of Elements & Ions: A variety of elements and ions are shown and you are required to enter the proper number of protons, electrons and neutrons. Converting between Moles & Mass: The number of moles of a compound, or a mass, is given and you are required to calculate the other quantity. Mole-Mass Conversions II: The number of moles of a compound, a mass, or the molar mass is given and you are required to calculate the missing quantity. Mole-Mass Formula: A chemical formula is given and you are required to calculate data for some element. Calculating Percentage Composition: Data are presented for a compound and you use this to calculate the mass percentage for each element. Empirical Formulas: An exercise in converting percent composition into empirical formulas. Density Calculations-I: Simple problems are given involving density calculations using common units. Density Calculations-II: Word problems are given involving density calculations, and generally requiring the interconversion of metric units. Density Interconversions: In this problem set you are given a density using one measure of mass & volume and you are required to convert this into a different mass/volume relationship. This is a good exercise in the interconversion of metric units.
Atomic Configuration of Elements & Ions: A variety of elements and ions are shown and you are required to enter the proper number of protons, electrons and neutrons.
Converting between Moles & Mass: The number of moles of a compound, or a mass, is given and you are required to calculate the other quantity.
Mole-Mass Conversions II: The number of moles of a compound, a mass, or the molar mass is given and you are required to calculate the missing quantity.
Mole-Mass Formula: A chemical formula is given and you are required to calculate data for some element.
Calculating Percentage Composition: Data are presented for a compound and you use this to calculate the mass percentage for each element.
Empirical Formulas: An exercise in converting percent composition into empirical formulas.
Density Calculations-I: Simple problems are given involving density calculations using common units.
Density Calculations-II: Word problems are given involving density calculations, and generally requiring the interconversion of metric units.
Density Interconversions: In this problem set you are given a density using one measure of mass & volume and you are required to convert this into a different mass/volume relationship. This is a good exercise in the interconversion of metric units.
Balancing Chemical Equations: A series of chemical equations are presented and you are required to enter coefficients to properly balance them. Chemical Stoichiometry: A balanced equation is given along with a molar quantity for one reactant or product; you are required to calculate the molar quantity of a second reactant or product. Using Mass Ratios to Solve Simple Stoichiometry Problems: A balanced equation is given along with a molar quantity for one reactant or product; you are required to calculate the molar quantity of a second reactant or product using the Mass Ratio method. Limiting Reactant Problems solved using the Mass Ratio Method: A balanced equation is given along with a molar quantity for the reactants; you are required to identify the limiting reactant using the Mass Ratio method. Percentage Yield: A balanced equation is given along with a molar quantity for one reactant or product; you are required to calculate the percentage yield in the reaction. Molarity Problems: An exercise in performing standard molarity calculations. Molarity Problems-II: More advanced exercises involving mass, molarity and dilution problems. Dilution of Solutions: In this problem set you are required to calculate volumes or concentrations for simple dilution problems.
Balancing Chemical Equations: A series of chemical equations are presented and you are required to enter coefficients to properly balance them.
Chemical Stoichiometry: A balanced equation is given along with a molar quantity for one reactant or product; you are required to calculate the molar quantity of a second reactant or product.
Using Mass Ratios to Solve Simple Stoichiometry Problems: A balanced equation is given along with a molar quantity for one reactant or product; you are required to calculate the molar quantity of a second reactant or product using the Mass Ratio method.
Limiting Reactant Problems solved using the Mass Ratio Method: A balanced equation is given along with a molar quantity for the reactants; you are required to identify the limiting reactant using the Mass Ratio method.
Percentage Yield: A balanced equation is given along with a molar quantity for one reactant or product; you are required to calculate the percentage yield in the reaction.
Molarity Problems: An exercise in performing standard molarity calculations.
Molarity Problems-II: More advanced exercises involving mass, molarity and dilution problems.
Dilution of Solutions: In this problem set you are required to calculate volumes or concentrations for simple dilution problems.
Lewis Structures: The formula for a compound is given. You are then led through a series of simple steps to construct an acceptable Lewis structure. Writing Formulas from Chemical Names: Names of a variety of molecular and ionic compounds are given and you are required to enter the chemical formula. Flash Cards - Ionic: A variety of ionic compounds are presented as "Flash Cards" with the chemical name on the following card. Naming Ionic Compounds: A variety of ionic compounds are presented and you are required to enter the chemical name. Naming Molecular Compounds: A variety of molecular compounds are presented and you are required to enter the chemical name. Dipole Moments: An exercise in assigning dipole moments to a variety of molecular compounds.
Lewis Structures: The formula for a compound is given. You are then led through a series of simple steps to construct an acceptable Lewis structure.
Writing Formulas from Chemical Names: Names of a variety of molecular and ionic compounds are given and you are required to enter the chemical formula.
Flash Cards - Ionic: A variety of ionic compounds are presented as "Flash Cards" with the chemical name on the following card.
Naming Ionic Compounds: A variety of ionic compounds are presented and you are required to enter the chemical name.
Naming Molecular Compounds: A variety of molecular compounds are presented and you are required to enter the chemical name.
Dipole Moments: An exercise in assigning dipole moments to a variety of molecular compounds.
Calculating Oxidation Numbers in Chemical Compounds: Simple chemical compounds are given and you are required to calculate the oxidation number of a selected element. Oxidation and Reduction Reactions: Simple chemical reactions and half-reactions are given and you are required to determine if oxidation or reduction has occurred.
Calculating Oxidation Numbers in Chemical Compounds: Simple chemical compounds are given and you are required to calculate the oxidation number of a selected element.
Oxidation and Reduction Reactions: Simple chemical reactions and half-reactions are given and you are required to determine if oxidation or reduction has occurred.
Boyle's Law: A series of problems involving pressure-volume calculations, and generally requiring the interconversion of metric units. Charles's Law: A series of problems involving pressure-volume calculations, and generally requiring the interconversion of metric units. The Ideal Gas Law: A series of problems involving pressure-volume-temperature-mole calculations (PV = nRT), and generally requiring the interconversion of metric units. Combined Gas Laws: A series of problems involving pressure-volume/pressure-temperature calculations, and generally requiring the interconversion of metric units.
Boyle's Law: A series of problems involving pressure-volume calculations, and generally requiring the interconversion of metric units.
Charles's Law: A series of problems involving pressure-volume calculations, and generally requiring the interconversion of metric units.
The Ideal Gas Law: A series of problems involving pressure-volume-temperature-mole calculations (PV = nRT), and generally requiring the interconversion of metric units.
Combined Gas Laws: A series of problems involving pressure-volume/pressure-temperature calculations, and generally requiring the interconversion of metric units.
Calculating Molality: Parameters are given for a variety of solutions and you are required to calculate the molality. Freezing and Boiling Points: Parameters are given for a variety of solutions and you are required to calculate the resulting freezing and boiling points. Raoult's Law: Parameters are given for a variety of solutions and you are required to calculate the resulting change in vapor pressure. Calculating Osmotic Pressure: Parameters are given for a variety of solutions and you are required to calculate the resulting osmotic pressure.
Calculating Molality: Parameters are given for a variety of solutions and you are required to calculate the molality.
Freezing and Boiling Points: Parameters are given for a variety of solutions and you are required to calculate the resulting freezing and boiling points.
Raoult's Law: Parameters are given for a variety of solutions and you are required to calculate the resulting change in vapor pressure.
Calculating Osmotic Pressure: Parameters are given for a variety of solutions and you are required to calculate the resulting osmotic pressure.
Calculating Equilibrium Constants: A chemical equation is given along with equilibrium concentrations; you are required to calculate the equilibrium constant. Converting Kc and Kp: A chemical equation is given along with a value for Kc and a temperature; you are required to calculate Kp. Using ICE Tables to Calculate K: A chemical equation is given along with equilibrium values; you are required to use an ICE Table to calculate K. Combining Equilibrium Expressions: A series of equilibrium expressions are given; you are required to combine these to obtain the desired equilibrium constant.
Calculating Equilibrium Constants: A chemical equation is given along with equilibrium concentrations; you are required to calculate the equilibrium constant.
Converting Kc and Kp: A chemical equation is given along with a value for Kc and a temperature; you are required to calculate Kp.
Using ICE Tables to Calculate K: A chemical equation is given along with equilibrium values; you are required to use an ICE Table to calculate K.
Combining Equilibrium Expressions: A series of equilibrium expressions are given; you are required to combine these to obtain the desired equilibrium constant.
Conjugate Acid-Base Pairs: An exercise in conjugate acids & bases in simple hydrolysis reactions. Basic pH Problems: Basic exercises in converting between pH, [H+] and [HO-]. pH Problems: An exercise in converting between pH, pOH, [H+] and [HO-]. The pH of Weak Acid & Base Solutions: A concentration of a weak acid or base is given and you are required to use the ionization constant to calculate the pH of the solution. Acid-Base Equilibria: In this exercise, you will take equilibrium values for two weak acids and combine them to get a net equilibrium constant for the combined acid-base reaction.
Conjugate Acid-Base Pairs: An exercise in conjugate acids & bases in simple hydrolysis reactions.
Basic pH Problems: Basic exercises in converting between pH, [H+] and [HO-].
pH Problems: An exercise in converting between pH, pOH, [H+] and [HO-].
The pH of Weak Acid & Base Solutions: A concentration of a weak acid or base is given and you are required to use the ionization constant to calculate the pH of the solution.
Acid-Base Equilibria: In this exercise, you will take equilibrium values for two weak acids and combine them to get a net equilibrium constant for the combined acid-base reaction.
Buffer Calculations: Using the Henderson-Hasselbach equation, you are required to calculate buffer concentrations or the resulting pH of the solution. Buffer Properties: You are given a buffer solution with a fixed acid-base ratio. Strong acid or base is then added. Using the Henderson-Hasselbach equation, you are required to calculate the resulting pH of the solution.
Buffer Calculations: Using the Henderson-Hasselbach equation, you are required to calculate buffer concentrations or the resulting pH of the solution.
Buffer Properties: You are given a buffer solution with a fixed acid-base ratio. Strong acid or base is then added. Using the Henderson-Hasselbach equation, you are required to calculate the resulting pH of the solution.
