Chemistry Ch 11
In order to predict whether or not a single-replacement reaction takes place, you need to consult a chart that shows the ____.
activity series of metals
Which of the following statements is NOT correct?
all chemical reactions can be classified as one of five general types
In every balanced chemical equation, each side of the equation has the same number of ____.
atoms of each element
Everyday equations describe ____.
chemical reactions
The reaction 2Fe + 3Cl3 -> 2FeCl3 is an example of which type of reaction?
combination reaction
The equation 2C3H7OH + 9O2 -> 6CO2 + 8H2O is an example of which type of reaction?
combustion reaction
Chemical equations ____.
describe chemical reactions
The equation H3PO4 + 3KOH -> K3PO3 + 3H2O is an example of which type of reaction?
double-replacement reaction
The products of a combustion reaction do NOT include ____.
hydrogen
A catalyst is ____.
not used up in a reaction
In a combustion reaction, one of the reactants is ____.
oxygen
Chemical reactions ____.
produce new substances
In the chemical equation H2O2 (aq) → H 2O(l) O2 (g), the O2 is a ____.
product
In a double-replacement reaction, the ____.
reactants are two ionic compounds
The equation Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2(g) is an example of which type of reaction?
single-replacement reaction
The type of reaction that takes place when one element reacts with a compound to form a new compound and a different element is a ____.
single-replacement reaction
Chemical equations must be balanced to satisfy ____.
the law of conservation of mass
Which of the following statements is NOT true about the decomposition of a simple binary compound?
the products are unpredictable
In a double-replacement reaction, ____.
the reactants are generally two ionic compounds in aqueous solution.
This symbol (idk what that symbol is) indicates that ____.
the reaction is reversable
A skeleton equation does NOT show which of the following?
the relative amounts of reactants and products
When the equation KClO3(s) -> KCl(s) + O2(g) is balanced, the coefficient of KClO3 is ____.
2
When the following equation is balanced, what is the coefficient for HCl? Mg(s) + HCl(aq) -> MgCl2(aq) + H2(g)
2
What are the missing coefficients for the skeleton equation below? Cr(s) + Fe(NO3)2(aq) -> Fe(s) + Cr(NO3)3(aq)
2,3,3,2
When potassium hydroxide and barium chloride react, potassium chloride and barium hydroxide are formed. The balanced equation for this reaction is ____.
2KOH + BaCl2 -> 2KCl + Ba(OH)2
When the equation Fe + Cl2 -> FeCl3 is balanced, what is the coefficient for Cl2?
3
If you rewrite the following word equation as a balanced chemical equation, what will the coefficient and symbol for fluorine be? nitrogen trifluoride -> nitrogen + fluorine
3F2
When the equation for the complete combustion of one mole of C3H7OH is balanced, the coefficient for oxygen is ____.
9/2
What is the balanced chemical equation for the reaction that takes place between bromine and sodium iodide?
Br2 +2NaI → 2NaBr +I2
Which of the following is the correctly balanced equation for the incomplete combustion of heptene, C7H14?
C7H14 + 7O2 --> 7CO + 7H2O
The complete combustion of which of the following substances produces carbon dioxide and water?
C8H18
A double-replacement reaction takes place when aqueous cobalt(III) chloride reacts with aqueous lithium hydroxide. One of the products of this reaction is ____.
Co(OH)3
What does the symbol (triangle) in a chemical equation mean?
Heat is applied to the reaction.
A double-replacement reaction takes place when aqueous Na2CO3 reacts with aqueous Sn(NO3)2. You would expect one of the products of this reaction to be ____.
NaNO3
Which of the following statements is NOT true about what happens in all chemical reactions?
New atoms are formed as products
Use the activity series of metals to complete a balanced chemical equation for the following single replacement reaction. Ag(s) + KNO (aq) ->
No reaction takes place because silver is less reactive than potassium.
In the activity series of metals, which metal(s) will displace hydrogen from an acid?
Only metals above hydrogen
Which of the following is the correct skeleton equation for the reaction that takes place when solid phosphorus combines with oxygen gas to form diphosphorus pentoxide?
P(s) + O2(g) ---> P2O5 (s)
Which of the following is a balanced equation representing the decomposition of lead(IV) oxide?
PbO2 ---> Pb + O2
What are the correct formulas and coefficients for the products of the following double-replacement reaction? RbOH + H3PO4 ->
Rb3PO4 + 3H2O
If a combination reaction takes place between rubidium and bromine, the chemical formula for the product is ____.
RbBr
Which of the following statements is NOT true about double-replacement reactions?
The reactant may be a solid metal
Which of the following statements is true about single-replacement reactions?
Two reactants produce two products
Symbols used in equations, together with the explanations of the symbols, are shown below. Which set is correct?
(aq) dissolved in water
What are the coefficients that will balance the skeleton equation below? AlCl3 + NaOH -> Al(OH)3 + NaCl
1, 3, 1 ,3
What are the coefficients that will balance the skeleton equation below? N + H -> NH
1, 3, 2
What are the missing coefficients for the skeleton equation below? Al2(SO4)3(aq) + KOH(aq) → Al(OH)3(aq) + K2SO4(aq)
1, 6, 2, 3
What is the driving force in the following reaction? Ni(NO3)2(aq) + K2S(aq) -> NiS(s) + 2KNO3(aq)
A precipitate is formed
In order for the reaction 2Al + 6HCl -> 2AlCl3 + 3H2 to occur, which of the following must be true?
Al must be above H on the activity series
The product of a combination reaction is Ba(OH) . If one of the reactants is H O, what is the other reactant?
BaO
