Who will win the titrating challenge?

1
Who will win the titrating challenge?
2
Record your Calculations into the Excel sheet up
front

• How would you find the Molarity using the class
  data
• Determine the molarity of NaOH using the class
  data
• How does it compare to the molarity you obtained?
• What error do you believe may have occurred in
  the lab?

3

• 1 atm760 mm Hg and 760 torr

4
What type of bonds exist in CaO?Electronegativiti
es of elements Ca 1.0 O 3.5

• A Ionic
• B Polar Covalent
• C Non Polar Covalent

5
What type of bonds exist in CH4?Electronegativiti
es Carbon 2.5 Hydrogen 2.1

• A. Ionic
• B. Polar Covalent
• C. Non Polar Covalent

6
What type of bonds exist in BF3?Electronegativity
of B2.0, F4.0

• A. Ionic
• B. Polar Covalent
• C. Non Polar Covalent

7
You have 22.3 mL of Carbon dioxide gas at 22.0º
C. What volume would the gas occupy at 37.0º C?
(pressure stays constant)

• 23.4 mL
• 21.2 mL
• 23.4 L
• 32.1 L

8
If the barometric pressure is 740.0 mm Hg and
the vapor pressure is 19.2 torr under the
conditions in which hydrogen gas is collected
(over water), what is the pressure of the
hydrogen gas alone?

• A. 759.2 torr
• B 759. 2 mm Hg
• C 720.8 mm Hg
• D None of the above

9
If a mixture of nitrogen and oxygen gas contains
1.20 atm of nitrogen and 256 mm Hg of oxygen,
what is the total pressure, in atmospheres, of
this mixture?

• A 254.8 mm Hg
• B 257.2 mm Hg
• C 1.54 atm
• D 1.54 mm Hg

10
A sample of carbon dioxide is placed in a 1.00 L
flask where it exerts a pressure of 67.5 mmHg.
What is the pressure of this gas sample when it
is transferred to a 25 mL flask? (temp. doesnt
change)

• A. 2.70 X10 3 mm Hg
• B. 1.68 X10 3 mmg Hg
• C. 16.8 atm

11
Write the equation that describes how KOH reacts
with HCl
12
A .300 mol sample of Argon gas has a volume of
9.00 L at a pressure of 875 mm Hg. What is the
temperature of the gas in degrees C?

• 202 degrees C
• 147 degrees C
• 232 degrees C
• 0 degrees C
• None of the above

13
What are the strongest intermolecular forces
present in CH3OHElectronegitivity of C2.5, H
2.1,O3.5

• A Dipole Dipole
• B Dispersion forces
• C Hydrogen bonding
• D Ionic

14
Draw the lewis dot structure for NH3. and
determine if the molecule polar or non
polar?Electro negativity of N3.0, Electro
negativity of H2.1

• A. Polar
• B. Non Polar

15
Draw the Lewis structure for Cl2 and determine if
the molecule is polar or non polarElectro
negativity of Cl is 3.0

• A. Polar covalent
• B. Non polar covalent

16
Draw the Lewis structure for CN-
17
Draw the Electron Dot structure for SrCl2
18
Calculate the volume of hydrogen gas produced at
STP by reacting 5.00g Mg and an excess of HCl

• A 4.61 L
• B. 2.30 L
• C. 2.30 X 103 mL
• D. 46.1 X 10 2 mL