experiment 4: solution preparation

Question 1

title of experiment

Answer 1

solution preparation

Question 2

it can be expressed in a no. of ways

Answer 2

solution concentration

Question 3

some concentrations are expressed in _______ per _______.
examples are _______ and _______ or
it can also be expressed as ______ per _______.
example is ______

Answer 3

amt. of solute per amt. of solution
percentage composition or molarity
amt. of solute per amt. of solvent
molality

Question 4

what are some other expression

Answer 4

mole fraction
normality
formality

Question 5

in some expressions that are very ______, expression such as: parts per ____, ____ and ____ are more convenient

Answer 5

dilute
thousand
million
billion

Question 6

it is the process of reducing the concentration of a solution by the addition of more solvent

Answer 6

dilution

Question 7

dilution is the process of _____ the concentration of a solution by _____ more _____

Answer 7

reducing
adding more solvent

Question 8

in the process of dilution, what solvent is added

Answer 8

aq solution

Question 9

what eqn does dilution uses

Answer 9

C1V1 = C2V2

Question 10

objectives of this activity

Answer 10

prepare solution by dilution
prepare solution from solid sample
familiarize themselves with the basic expression of concentrations of solution

Question 11

reagents used

Answer 11

concentrated hydrochloric acid
sodium hydroxide pallets

Question 12

instrument used

Answer 12

top-loading balance

Question 13

never add _____ to ____ when mixing them instead add ____ to ____

Answer 13

water to acid
acid to water

Question 14

formula of molarity
formula of molality

Answer 14

molarity (M = mol. of solute/ L of solution)
molality (m = mol. of solute/ Kg of solvent)

Question 15

what are the procedures

Answer 15

calculating the solution preparation
preparing 0.100 M of NaOH
preparing 0.100 M of HCI

Question 16

%w/w

Answer 16

mass of solute/ mass of soln. x100

Question 17

%v/v

Answer 17

vol. of solute/ vol. of soln. x100

Question 18

what are the 2 formulas of ppm

Answer 18

amt. of solute/ amt. of soln. x10^6

mg of solute/ L of soln.

Question 19

concentrated HCI is equivalent to _____

Answer 19

11.65 M

Question 20

NaOH pellets are ____ and ____

Answer 20

corrosive
hygroscopic

Question 21

C1 -
C2 -
V1 -
V2 -

Answer 21

C1 - initial conc.
C2 - initial vol. obtained frm stock soln.
V1 - desired conc.
V2 - desired total vol. of the soln.