Precipitation reactions
The solubility of calcium carbonate with water is
Insoluble
The agent absorbing electrons
What is Oxidizing agent
These types of compounds are molecular and can be either strong electrolytes or weak electrolytes depending on the example
What are Acids and Bases
Heat is released to a reaction by the surroundings
what is Endothermic Reaction?
The relationship between moles and pressure is described as
proportional
What is the molecular equation for the reaction of Sr(NO3)2 (aq) and Li2SO4(aq) and the precipitate that forms
ME: Sr(NO3)2(aq) + Li2SO4(aq) --> SrSO4 (s) + 2LiNO3 (aq)
strontium sulfate is precipitate
The oxidation number of Cr in Cr2O72-
+6
Identify the weak acids and bases in the following:
Nitric acid, Sulfuric Acid, Ascorbic Acid, Rubdium Hydroxide, Ammonia, Acetic acid, Iodic acid
Ascorbic Acid, Ammonia, Acetic acid
Determine Hrxn for 2NO(g) + O2(g) --> 2NO2(g) using Hess's Law
A) N2(g) + O2(g) --> 2 NO(g) H = +183 kJ
B) ½N2(g) + O2(g) --> NO2(g) H = +33 kJ
-117 kJ
The volume of a gas is 7.15 L, measured at 1.00 atm. What is the pressure in mmHg if the volume is changed to 9.25 L
587 mmHg
What are the spectator ions for the combination of Li2CO3 (aq) + Ba(OH)2 (aq)
Li+ and OH-
The oxidation number of W in SrWO4
+6
These compounds tend to accept protons in solution
Bronsted Lowry Base
Find w and determine if work is done by the system or on the system when 928 kJ of heat is released and Δ U is -1.47x103 kJ
w= -5.4x102 kJ, work is done by the system
H2 (g) moves 4.9 times as fast as an unknown gas.
Answer choices: Br2 , CO, O3, Xe
Ozone
What is the net ionic equation for the combination of Iron (III) chloride and sodium phosphate
Fe3+ (aq) + PO43- (aq) --> FePO4 (s)
Which of the following reactions will not work?
Fe (s) + PtCl2 (aq) -->
Sn (s) + AlCl3 (aq) -->
Zn (s) + HBr (aq) >
Sn (s) + AlCl3 (aq) -->
What is the correct net ionic equation for the rxn of HF and RbOH?
HF (aq) + OH- (aq) --> H2o (l) + F- (aq)
2ZnS(s) + 3O2(g) --> 2ZnO (s) + 2SO2 (g) Heat of rxn = -879 kJ
Find heat released by the roasting of 5 g of ZnS (s) (Molar mass of ZnS = 97.47 g)
-22.5 kJ
What is the density of HBr gas at 733 mmHg and 46.0 celsius in g/L
2.98 g/L
What is the result of the combination of NH4NO3 (aq) and BaCl2 (aq)
No reaction. No precipitate is formed.
The products are both strong electrolytes and thus all the ions are spectator ions in solution.
Determine the balanced molecular equation Mg(s) and Cr(C2H3O2)3 (aq) and determine which is reduced
3Mg (s) + 2Cr(C2H3O2)3 (aq) --> 3Mg(C2H3O2)2 (aq) + 2Cr (s)
Cr is reduced
How many mililiters of a 1.42 M H2SO4 solution are needed to neutralize 95.5 mL of a 0.336 M KOH solution?
11.3 mL
A 1.00 g sample is burned in a calorimeter to determine its heat capacity, Ccal. The reaction gives off 26.42 kJ of heat and the temperature of the water increases from 23.4 C to 27.2 C. What is the heat capacity of the calorimeter, Ccal?
6953 J/C or 6.95 kJ/C
C6H12O6 (s) --> 2C2H5OH (l) + 2CO2 (g)
If 0.0332 moles of C6H12O6 (s) reacts to produce 1.44 L of CO2 (g) at 293 K and 0.984 atm, what is the % yield of CO2
88.9%