Consider the pair of reactions. Draw the organic products, then predict the type of substitution mechanism and compare the expected rates. Both reactions start with propyl chloride reacting with a halide ion in water to form a product. Reaction 1 has a bromide ion, while reaction 2 has an iodide ion. Draw product 1. Draw product 2. Identify the mechanism of each reaction. Reaction 1 occurs by an SN2 mechanism. Reaction 1 occurs by an SN1 mechanism. Reaction 2 occurs by an SN2 mechanism. Reaction 2 occurs by an SN1 mechanism. Compare the rates of each reaction. Reaction 2 is faster than reaction 1. Reaction 1 is faster than reaction 2. Both reactions occur at the same rate.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.

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