post lab discussion: exp. 4

Question 1

a solution in which water is the solvent

Answer 1

aq soln.

Question 2

a homogenous mixture of 2 or more substances with each substance retaining its own chemical identity

Answer 2

solution

Question 3

difference between
unsaturated -
saturated -
supersaturated -

Answer 3

unsaturated - soln. that contains less than the maximum amt. of solute

saturated - soln. that contains the max. mmt of solute

supersaturated -an unstable solution that temporarily contains more solute than that present in saturated soln.

Question 4

it is the process of reducing the concentration of a solution by increasing the amt. of solvent

Answer 4

dilution

Question 5

how to calculate the mass (g)of NaOH solution needed

Answer 5

mol NaOH = MxV in L
mass NaOH = mol NaOH x molar mass NaOH

Question 6

how to calculate the vol. of HCI needed

Answer 6

M1V1 = M2V2

Question 7

identify the type of water:
it is the purest form of water to be produced. used for critical applications and advances analytical procedures

Answer 7

type I water

Question 8

identify the type of water:
it is a good feed water for clinical analyzers as the calcium builds-ip is reduced with this water type

Answer 8

type II water

Question 9

identify the type of water:
water is produces through the purification technology reverse osmosis. it has the lowest purity.
typically the starting point for basic lab applications (cleaning glassware, heating baths or media preparation)

Answer 9

type III water

Question 10

type 1 water is aka

Answer 10

ultrapure water

Question 11

type III water is aka

Answer 11

RO water