WorksheetsMidterm 1 Review
Total questions: 16
Worksheet time: 17mins
When the following redox equation is balanced with smallest whole-number coefficients, the coefficient for zinc will be.
Zn(s) + ReO4-(aq) → Re(s) + Zn2+(aq) (acidic solution).
2
7
8
16
If 1.0 L of 1.0 M HCl spilled and needed to be neutralized, how many grams of the solid sodium carbonate (Na2CO3, 10 g/mol) would be required?
53
106
1060
530
212
What is the net ionic equation for the reaction of AgNO3 (aq) and KCl (aq)?
What is the oxidation state of nitrogen in HNO3?
+3
+1
-2
+5
-1
What is the oxidizing agent of this reaction?
3Mg + N2−−−−> Mg3N2
(a)
Suppose that hydrochloric acid and aluminum are reacted to produce hydrogen gas. This hydrogen gas is collected by displacement of water at 25oC and a total pressure of 700torr. If the volume of the gas collected is 400mL, then how many moles of hydrogen were collected?
29.0 mmoles
11.0 moles
24.6 moles
14.6 mmoles
The following graph shows the distribution of molecular speeds for CO2 at four different temperatures. Which of the curves corresponds to the highest temperature?
a
b
c
d
Consider two flasks, the first flask has 2.00L of hydrogen at a pressure of 475 torr, the second has 1.00 L of nitrogen at a pressure of 0.200 atm. If the stopcock between the two flasks is opened what is the total pressure in atm? Assume the total volume is 3.00L.
(1 atm/760 torr)
(a)
A sample of nitrogen occupies a volume of 250 mL at 25°C. What volume will it occupy at 95°C?
(a)
A balloon that can hold 85 L of air is inflated with 3.5 moles of gas at a pressure of 1.0 atmosphere. What is the temperature in C of the balloon?
(a)
Using Van der Waals equation, calculate the temperature of 20.0 mole of helium in a 10.0 litre cylinder at 120 atmosphere pressure. a = 0.0341 L2 at mol-2; b = 0.0237 L mol-1
(a)
Carbon dioxide gas (1.00 mole) at 373 K occupies 536 mL at 50.0 atmosphere pressure. What is the calculated value of the pressure using the Van der Waals Equation? (a = 3.61 L2 atm mol-2; b = 0.0428 L mol-1)
(a)
What is the density of an ideal gas with a molecular mass of 50 g/mol at 2 atm and 27 °C? R = 0.0821 L·atm/mol·K
(a)
Calculate the root mean square velocity for the atoms in a sample of oxygen gas at 32°C.
(a)
If 0.1718 L of a 0.3556-M C3H7OH solution is diluted to a concentration of 0.1222 M, what is the volume of the resulting solution?
(a)
I am going to get an ___ on the exam.
A
B
C
D
