General Chemistry Questions & Answers

General Chemistry Questions & Answers "ICE" Tables - CORRECT ANSWER- Initial, Change, Equilibrium --can disregard x in reactant when Kc 10^-3 `Polymers - CORRECT ANSWER- molecules that consist of a single unit (monomer) repeated many times 1 cm^3= ___ - CORRECT ANSWER- 1 mL 1. Calculating molar solubility - CORRECT ANSWER- molar solubility = the moles/L that dissolve -- in your ICE table molar solubility = x 1. n (the principle quantum number) - CORRECT ANSWER- this can be any integer 1,2,3,4, etc. This number tells us which shell the e- is in, or (in other words) how far the e- is from the nucleus 2. Calculating Ksp - CORRECT ANSWER- --will be given molar solubility or moles and liters of solution and will have to convert to molar solubility --then use ice table and given values to find Ksp 2. l (the azimuthal quantum number) - CORRECT ANSWER- this tells us what kind of orbital (s,p,d,f) the e- is in: 0 = s 1 = p 2 = d 3 = f 3. Common Ion effect - CORRECT ANSWER- if you have an equilibrium reaction and add a strong electrolyte that produces one of the ions on the right side of the equilibrium reaction, then the equilibrium reaction will be driven to the left 3. ml (the magnetic quantum number) - CORRECT ANSWER- this number can be any integer from -l to l including zero. This number tells us which one of the p-orbitals, d-orbitals, or forbitals, the e- is in. 4. Determine if precipitation will occur - CORRECT ANSWER- --for these problems you don't typically need an ICE table -- instead just write the balanced reaction, write the solubility expression, plug in the concentration values, and see if your Q is larger than Ksp --If Q Ksp you have precipitation. --If Q Ksp then you do NOT have precipitation 4. ms (the spin quantum number) - CORRECT ANSWER- the pain number is equal to +/- 1/2. That is, for any two e- occupying the same orbital, one is assigned a +1/2 and the other a -1/2 spin. --No two electrons in the same element can have the same four quantum numbers A to T - CORRECT ANSWER- Hydrogen bond to each other (TWO H-bonds) Absorption - CORRECT ANSWER- the amount of light a substance allows to pass through it Accuracy - CORRECT ANSWER- how close a measurement is to reality