Atomic Concepts
... 3. Electrolyte- is a substance when dissolved in water (aq), forms a solution capable of conducting an electrical current 4. More ions = better conductor 5. Arrhenius acids- yield H+, hydrogen ions as the only positive ion in solution 6. H+, the hydrogen ion may also be written as H3O+, the hydroniu ...
... 3. Electrolyte- is a substance when dissolved in water (aq), forms a solution capable of conducting an electrical current 4. More ions = better conductor 5. Arrhenius acids- yield H+, hydrogen ions as the only positive ion in solution 6. H+, the hydrogen ion may also be written as H3O+, the hydroniu ...
part 3 - instructor version
... Balance oxygen by adding water Balance hydrogen by adding (a) H+ in acidic solutions, (b) in basic solutions, continue as if in acidic solution, but at the end each H + ion will be neutralized by adding OH- ions 6. Balance charge by adding electrons; for the oxidation half-reaction, the electrons wi ...
... Balance oxygen by adding water Balance hydrogen by adding (a) H+ in acidic solutions, (b) in basic solutions, continue as if in acidic solution, but at the end each H + ion will be neutralized by adding OH- ions 6. Balance charge by adding electrons; for the oxidation half-reaction, the electrons wi ...
Page 1
... 18. What is the pH and pOH of a solution if the [H+]= 4.0 x 10-6. Is this an acid, a base, or neutral? pH = -(log 4 + log 10-6) pH = - (.60 + -6) pH = 5.4 pOH = 8.6 Acidic 19. What is the charge on the hydronium ion? H+1 20. Define pH, and explain the pH scale (see page 610). pH is the negative loga ...
... 18. What is the pH and pOH of a solution if the [H+]= 4.0 x 10-6. Is this an acid, a base, or neutral? pH = -(log 4 + log 10-6) pH = - (.60 + -6) pH = 5.4 pOH = 8.6 Acidic 19. What is the charge on the hydronium ion? H+1 20. Define pH, and explain the pH scale (see page 610). pH is the negative loga ...
Chap. 2. Chemical Foundations Topics Chemical Bonds
... Noncovalent interactions are weak electrical bonds between molecules. Types of noncovalent interactions are 1) ionic (electrostatic) bonds, 2) H-bonds, and 3) van der Waals interactions. Noncovalent interactions (1-5 kcal/mol) are typically ~100-fold weaker than covalent bonds (Fig. 2.6). Their stab ...
... Noncovalent interactions are weak electrical bonds between molecules. Types of noncovalent interactions are 1) ionic (electrostatic) bonds, 2) H-bonds, and 3) van der Waals interactions. Noncovalent interactions (1-5 kcal/mol) are typically ~100-fold weaker than covalent bonds (Fig. 2.6). Their stab ...
Chemical Equations PowerPoint
... 5. Atomic theory can be used to explain why chemical reactions obey the “Law of Conservation of Matter”. – All atoms present at the start of a chemical reaction are present at the end of that chemical reaction (atoms are simply rearranged during a chemical ...
... 5. Atomic theory can be used to explain why chemical reactions obey the “Law of Conservation of Matter”. – All atoms present at the start of a chemical reaction are present at the end of that chemical reaction (atoms are simply rearranged during a chemical ...
Module 2
... Helmholtz’ free energy. Termodynamical equilibrium conditions. The criteria for the spontaneous processes direction. The basic principles of thermodynamics applying to living organisms. ATP as an energy source for biochemical reactions. Macroergic compounds. 3.2. Overview Definition of the first law ...
... Helmholtz’ free energy. Termodynamical equilibrium conditions. The criteria for the spontaneous processes direction. The basic principles of thermodynamics applying to living organisms. ATP as an energy source for biochemical reactions. Macroergic compounds. 3.2. Overview Definition of the first law ...
PHYSICAL SETTING CHEMISTRY
... The compound contains two different positive ions. The gram-formula mass of KAl(SO4)2 •12H2O is 474 grams per mole. 66 Identify one positive ion in the hydrated compound. Your response must include both the chemical symbol and charge of the ion. [1] 67 Describe, in terms of composition, one way in w ...
... The compound contains two different positive ions. The gram-formula mass of KAl(SO4)2 •12H2O is 474 grams per mole. 66 Identify one positive ion in the hydrated compound. Your response must include both the chemical symbol and charge of the ion. [1] 67 Describe, in terms of composition, one way in w ...
1970 - 2005 Solids/Liquids/Solutions FRQs
... very little water from the ice. The solution now (d) Because of the polar nature of water, it is capable of solvating the ions that result from the dissociahas a freezing point lower than the temperature of tion, whereas the nonpolar benzene interacts very the ice, therefore, the ice melts. weakly w ...
... very little water from the ice. The solution now (d) Because of the polar nature of water, it is capable of solvating the ions that result from the dissociahas a freezing point lower than the temperature of tion, whereas the nonpolar benzene interacts very the ice, therefore, the ice melts. weakly w ...
Chapter 1: Quiz Review - Wetaskiwin Composite High School
... 5. What statement about binary compounds is FALSE? A. Binary compounds are formed from only two elements. B. The name of a binary compound ends in –ide C. Binary compounds contain atoms of a metal and atoms of a non-metal D. Binary compounds may be ionic or molecular 6. A binary molecular compound i ...
... 5. What statement about binary compounds is FALSE? A. Binary compounds are formed from only two elements. B. The name of a binary compound ends in –ide C. Binary compounds contain atoms of a metal and atoms of a non-metal D. Binary compounds may be ionic or molecular 6. A binary molecular compound i ...
Student Review packet
... NH4Cl(s) NH3(g) + HCl(g) for this reaction, ΔH = +42.1 kilocalories Suppose the substances in the reaction above are at equilibrium at 600 K in volume V and at pressure P. State whether the partial pressure of NH3(g) will have increased, decreased, or remained the same when equilibrium is reestabl ...
... NH4Cl(s) NH3(g) + HCl(g) for this reaction, ΔH = +42.1 kilocalories Suppose the substances in the reaction above are at equilibrium at 600 K in volume V and at pressure P. State whether the partial pressure of NH3(g) will have increased, decreased, or remained the same when equilibrium is reestabl ...
Unit 1 Matter and Change HOMEWORK
... a) Circle the substances that can be separated by physical means Phys b) Box the substances that can be separated by chemical means Chem ...
... a) Circle the substances that can be separated by physical means Phys b) Box the substances that can be separated by chemical means Chem ...
National 5 - Deans Community High School
... Explain each of the following. (a) Small sticks of wood burn faster than logs. (b) When bellows are used to blow air on to a fire, the fire burns brighter. (c) Food is preserved longer when stored in a fridge. (d) Plants grow faster in a green-house than in the open-air. (e) Large potatoes take long ...
... Explain each of the following. (a) Small sticks of wood burn faster than logs. (b) When bellows are used to blow air on to a fire, the fire burns brighter. (c) Food is preserved longer when stored in a fridge. (d) Plants grow faster in a green-house than in the open-air. (e) Large potatoes take long ...
Our next task is solving a quadratic equation
... Our next task is solving a quadratic equation. Just as with any algebraic equation such as x + 5 = 0, we will be able to say that x = something. This time however, x will not have just one solution, it will have up to two solutions!! In order to solve quadratics we must factor them! This is why we l ...
... Our next task is solving a quadratic equation. Just as with any algebraic equation such as x + 5 = 0, we will be able to say that x = something. This time however, x will not have just one solution, it will have up to two solutions!! In order to solve quadratics we must factor them! This is why we l ...
Unit 2 Assignments Answers
... Unlike gases, molecules in liquid phase have significantly less spaces between them. Hence, there is not enough room to compact these molecules to a smaller volume. Therefore, liquids are incompressible. Surface tension is the amount of energy required to stretch or increase the surface of a liquid ...
... Unlike gases, molecules in liquid phase have significantly less spaces between them. Hence, there is not enough room to compact these molecules to a smaller volume. Therefore, liquids are incompressible. Surface tension is the amount of energy required to stretch or increase the surface of a liquid ...
Quiz Samples
... For the reaction CuSO4*5H2O Æ CuSO4 + 5 H2O calculate theoretical amount of CuSO4 produced from 1.00 g of pentahydrate (Cu = 64, S = 32, O = 16, H = 1) a)b)c) MWCuSO4x5H2O = 64+32+4x16+5x18=250 g/mol; MWH2O=18 g/mol Theor. g CuSO4=(1.00g/250g mol-1)*160g mol-1 = 0.64g For the reaction CuSO4*5H2O Æ C ...
... For the reaction CuSO4*5H2O Æ CuSO4 + 5 H2O calculate theoretical amount of CuSO4 produced from 1.00 g of pentahydrate (Cu = 64, S = 32, O = 16, H = 1) a)b)c) MWCuSO4x5H2O = 64+32+4x16+5x18=250 g/mol; MWH2O=18 g/mol Theor. g CuSO4=(1.00g/250g mol-1)*160g mol-1 = 0.64g For the reaction CuSO4*5H2O Æ C ...
PH
In chemistry, pH (/piːˈeɪtʃ/) is a numeric scale used to specify the acidity or alkalinity of an aqueous solution. It is the negative of the logarithm to base 10 of the activity of the hydrogen ion. Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are alkaline or basic. Pure water is neutral, being neither an acid nor a base. Contrary to popular belief, the pH value can be less than 0 or greater than 14 for very strong acids and bases respectively.pH measurements are important in medicine, biology, chemistry, agriculture, forestry, food science, environmental science, oceanography, civil engineering, chemical engineering, nutrition, water treatment & water purification, and many other applications. The pH scale is traceable to a set of standard solutions whose pH is established by international agreement.Primary pH standard values are determined using a concentration cell with transference, by measuring the potential difference between a hydrogen electrode and a standard electrode such as the silver chloride electrode.The pH of aqueous solutions can be measured with a glass electrode and a pH meter, or indicator.pH is the negative of the logarithm to base 10 of the activity of the (solvated) hydronium ion, more often (albeit somewhat inaccurately) expressed as the measure of the hydronium ion concentration.The rest of this article uses the technically correct word ""base"" and its inflections in place of ""alkaline"", which specifically refers to a base dissolved in water, and its inflections.