Solutions & Electrochemistry

Question 1

Buffers (capillaries)

Answer 1

The exponential growth of position on the capillaries

Question 2

Electric charge

Answer 2

1 mole of electric charge corresponds to 1 faraday of charge (if 2 e required, then multiple moles by 2)

Question 3

Phosphatidylinositol, found in myelin sheath that surround neurons and are incorporated because:

Answer 3

They are poor conductors, which help myelin speed up action potential transmission

Question 4

A solutes migration time (within a capillary) can be decreased by:

Answer 4

Applying a higher voltage and using a shorter capillary tube

Question 5

NaOH and HF

Answer 5

Monobasic and monoprotic, so 10mL of NaOH would neutralize 20 mL of HF

Question 6

By increasing fluid intake, urine output increases, however

Answer 6

The number of moles of ions taken into the body still remains constant

Question 7

Calcium ingestion

Answer 7

Supplemental calcium is most often taken without food, and dietary calcium can prevent ingested oxalate from being absorbed

Question 8

Aluminum

Answer 8

Poorly soluble under general conditions, however under acidic conditions Al(OH)3 dissociates to form Al3+ and water
Al works to replace (Fe3+ ions) in some groups, as well as partially replacing some divalent cations (Ca, Fe, and Mg)

Question 9

0.150 M = mM

Answer 9

150

Question 10

7.5 µM = mM

Answer 10

0.0075 mM

Question 11

How many moles of NaCl were contained in 500 mL of the buggr solution?

Answer 11

300 mmol/L x 500 mL x 1L/1000mL = 150 mmol = 150 x 10^-3 mol = 1.5 x 10^-1 mol

Question 12

Lipophilic

Answer 12

Not water-soluble; found in tert-butyl methyl ether layer, which is hydrophobic

Question 13

Percipitation

Answer 13

Happens when the rxn quotient (Q) exceeds the equilibrium constant Ksp