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WorksheetsTCBOE Chemistry Post 2 — Section 1
Total questions: 14
Worksheet time: 7mins
The equation below is what type of reaction? Pb(NO3)2 (aq) + 2NaI (aq) → PbI2 (s) + 2NaNO3 (aq)
Double Replacement
Decomposition
Single Replacement
Synthesis
What are the products in the reaction shown below? HCl + NaOH →
Na + Cl2
NaCl + OH
NaOH + Cl
NaCl + H2O
The unbalanced equation below shows the combustion of methane. CH4 + O2 → CO2 + H2O Which series of numbers represents the coefficients necessary to balance the equation?
2, 2, 1, 4
1, 1, 1, 2
1, 2, 1, 2
0, 3, 2, 2
This equation shows the combustion of methanol. 2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(g) How many liters of carbon dioxide gas at STP are produced by the combustion of 64.0 g of methanol?
11.2 L
22.4 L
44.8 L
89.6 L
What is the correct formula for potassium sulfite?
KHSO3
KHSO4
K2SO3
K2SO4
Write the unbalanced equation for aluminum bromide reacting with rubidium acetate.
AlBr + RbC2H3O2 --> AlC2H3O2 + RbBr
AlBr3 + RbC2H3O2 --> Al(C2H3O2)3 + RbBr
AlBr3 + RbC2H3O2 --> AlRb + BrC2H3O2
AlBr3 + RbC2H3O2 --> AlBr3 + BrC2H3O2
Write an unbalanced reaction for this reaction: fluorine reacts with potassium bromide.
F + KBr --> K + FBr
F2 + KBr --> F2K2 + Br
F2 + KBr --> KF + Br
F2 + KBr --> KF + Br2
What type of reaction is this? BaCO3 --> BaO + CO2
double replacement
single replacement
synthesis
decomposition
What is the correct name for the compound CoCl2?
cobalt (I) chloride
cobalt (II) chloride
cobalt (III) chloride
cobalt chloride
Aqueous lead II nitrate, Pb(NO3)2, is mixed with potassium iodide, KI. Which of the following is an expected product?
PbI2 (s)
KNO3 (s)
KI (s)
Pb(NO3)2 (s)
The reaction between FeS and O2 shown below produces the gas SO2. 4 FeS + 7 O2 → 2 Fe2O3 + 4 SO2 How many liters of SO2 gas, at STP, will be produced from 3.1 grams of oxygen?
1.2
2.5
3.8
7.6
A chemistry student mixes together sodium carbonate and hydrochloric acid in a test tube. The student notices that bubbles form inside the tube and that the tube seems to get hot as the reaction takes place. Which balanced chemical equation represents this reaction?
Na2CO3 + 2 HCl → 2 NaCl + CO2 + H2O
Na2CO3 + HCl → NaCl + CO2 + H2O
Na2CO3 + 2 HCl → NaCl + H2CO3
Na2CO3 + 2 HCl → 2 NaCl + H2 + CO2
A chemistry student mixes together sodium carbonate and hydrochloric acid in a test tube. The student notices that bubbles form inside the tube and that the tube seems to get hot as the reaction takes place. What is the chemical identity of the bubbles that are formed?
Carbon dioxide gas
Hydrogen gas
Oxygen gas
Chlorine gas
A chemistry student mixes together sodium carbonate and hydrochloric acid in a test tube. The student notices that bubbles form inside the tube and that the tube seems to get hot as the reaction takes place. Based on the observation that the tube gets hot, is this reaction endothermic or exothermic?
Exothermic
Endothermic
