Chemistry
Which of the following best represents the reaction between sulfuric acid and calcium hydroxide? F H2SO4 Ca(OH)2 → CaSO4 H2O G HSO4 CaOH → CaSO4 H2O H H2SO4 Ca(OH)2 → CaSO4 2H2O J H2SO4 2Ca(OH)2 → 2CaSO4 3H2O
H
Which of the following equations is balanced? A H2SO4 2NaOH → Na2SO4 H2O B CH4 Cl2 → CH2Cl2 HCl C H2O MgO → Mg(OH)2 D Al(OH)3 H3PO4 → AlPO4 2H2O
H
Which of these is the balanced equation? F FeCl3 Na2CO3 → Fe2(CO3)3 NaCl G 2FeCl3 2Na2CO3 → 3Fe2(CO3)33NaCl H 2FeCl3 3Na2CO3 → Fe2(CO3)36NaCl J 3FeCl3 2Na2CO3 → 3Fe2(CO3)36NaC
H
Which of the following reactions is an example of a single-replacement reaction? A 2AgNO3 Cu → Cu(NO3)2 2Ag B NaOH HCl → NaCl H2O C CO2 → C O2 D 4Fe(OH)2 O2 → 4Fe(OH)3
A
Which is an example of a synthesis reaction? F HCl KOH → KCl H2O G Pb(NO3)2 2HBr → PbBr2 2HNO3 H C O2 → CO2 J Mg H2SO4 → MgSO4 H
H
? AgNO3 ?AlCl3 → ?AgCl ?Al(NO3)3 Which of these sets of coefficients will balance this equation? F 3, 3, 2, 1 G 3, 1, 3, 1 H 1, 6, 1, 9 J 9, 3, 3, 3
G
Very Active Metal Water → Metal Hydroxide? Which of these completes this reaction? F Oxygen G Hydrogen H Metal oxide J Air
G
Cu(s) 2AgNO3(aq) → Cu(NO3)2 (aq) 2Ag(s) When copper reacts with silver nitrate according to the equation, the number of grams of copper required to produce 432 grams of silver is — A 31.5 g B 127 g C 216 g D 252 g
B
In the reaction 2SO2(g) O2(g) ⇔2SO3(g), which change would cause the greatest increase in the concentration of SO3? A Decrease the concentration of SO2 B Decrease the concentration of O2 C Increase the concentration of SO2 D Increase the concentration of O2
C
Which of the following reactions is a decomposition reaction? A S8 8O2 → 8SO2 B O2 2H2O → 2H2O2 C 2KClO3 → 2KCl 3O2 D 2Na 2AgCl → 2NaCl 2Ag
C
Zn CuSO4 → Cu ZnSO4 Which reaction type best describes the reaction above? A Combination B Decomposition C Single replacement D Combustion
C
Which of the following is a balanced equation? A C3H8(g) O2(g) → CO2(g) H2O(g) B C3H8(g) O2(g) → 3CO2(g) H2O(g) C C3H8(g) 2O2(g) → 3CO2(g) 4H2O(g) D C3H8(g) 5O2(g) → 3CO2(g) 4H2O(g)
D
A catalyst accelerates a chemical reaction because the — F catalyst decreases the number of collisions in a reaction G activation energy of the reaction is lowered in the presence of a catalyst H catalyst decreases the concentration of the reactants J temperature of the reaction increases due to the catalyst
G
Which of the following reactions is a neutralization reaction? F 2AgNO3 Cu → Cu(NO3)2 2Ag G KOH HNO3 → KNO3 H2O H C O2 → CO2 J 4Fe(OH)2 2H2O2 → 4Fe(OH)
G
Which of these reactions shows simple chemical decomposition? F H2 I2 → 2HI G 2NaCl → 2Na Cl2 H NaF HCl → HF NaCl J I2 2NaCl → 2NaI Cl2
G
A gas has a volume of 100.0 mL at a pressure of 600.0 mm Hg. If the temperature is held constant, what is the volume of the gas at a pressure of 800.0 mm Hg? F 33.33 mL G 66.67 mL H 75.00 mL J 133.0 mL
H
The number of grams of oxygen required for the complete combustion of 4.00 grams of methane (CH4) is — F 4.00 g G 8.00 g H 16.0 g J 32.0 g
H
Which of these is the general formula for a double-replacement reaction? F A + B → AB G AB + XY → BA + YX H AB + XY → AY + XB J A + B XY → AX + BY
H
2H2(g) O2(g) → 2H2O(g) How many liters of oxygen are required to produce 2 liters of water at STP? A 1 B 2 C 3 D 4
A
Which of the following is a balanced equation? A H2 Br2 → 2HBr B H2 Br2 → HBr C H2 2Br2 → 2HBr D 2H2 Br2 → HBr
A
