Reference no: EM132614814

Differentiate and compare the strengths of hydrochloride acid and acetic acid A) electrodes B) salt bridges 

1. For each of the following components states importance to the operation of the electrochemical (galvanic) cell

C) external circuits

D) electrolytes 

1. Match the predominant type of force of attraction for each of the following substances from the following list (. not all must be used can use more than once if needed) 

A) CH4 (methane) 

B)Na2SO4 (sodium sulphate) 

C) C (diamond) 

D) He (helium) 

E) Fe (iron)

F) HF (hydrogen fluoride) 

1. Metallic 
2. Permanent dipole dipole
3. London forces
4. Ionic bonding 
5. covalent bonding
6. hydrogen bonding

1. Phosphorus has three oxidation states, 3+, 5+ and 3-. Use its electronic configuration to explain these three oxidation states and its ability to behave like a "metal" or a nonmetal depending on the other chemically bonded element.
2. The melting point of diamond, C, is > 3800 K. The melting point of carbon tetrachloride, CCI4, is 250 K. Explain the difference in their structures that account for these two substances' respective melting points.
3. Some solid ammonium nitrate, NH4NO3, is added to a coffee-cup calorimeter that contains water at room temperature. After the NH NO3 has dissolved, the temperature of the solution drops to near 0 °C. a) Show the dissociation reaction of the ammonium nitrate when it is dissolved in water. b) Is this an exothermic or endothermic reaction? c) Compare the enthalpies of the products and reactants.
4. Draw a structural diagram for each of the following compounds: (on paper) a) o-dichlorobenzene b) 2-methylpropanoic acid c) 1-methoxypropane d) 2-pentyne