Chemistry Chapter 9 Powerpoint Review
If you rewrite the following word equation as a balanced chemical equation, what will the coefficient and symbol for iodine be? Bromine + potassium iodidepotassium bromide + iodine
1
Aluminum chloride and bubbles of hydrogen gas are produced when metallic aluminum is placed in hydrochloric acid. Write the balanced equation for this reaction
2 Al + 6 HCl = 2 AlCl3 + 3 H2
What is the coefficient for chlorine in the equation: Fe + Cl2 FeCl3
2 Fe + 3 Cl2 = 2 FeCl3
Balance: KClO3(s) KCl(s) + O2(g)
2 KClO3 = 2 KCl + 3 O2
When potassium hydroxide and barium chloride react, potassium chloride and barium hydroxide are formed. Write the balanced equation for this reaction.
2 KOH + BaCl2 = 2 KCl + Ba(OH)2
Write a balanced equation to represent the decomposition of lead (IV) oxide.
2 PbO2 = 2 PbO + O2
When the equation for the complete combustion of ethanol, C2H5OH, is balanced, what is the coefficient for oxygen?
3
Write a balanced equation for the combination reaction that takes place when iron (III) oxide is formed from it's constituent elements.
4 Fe + 3 O2 = 2 Fe2O3
Balance the following equation: NH3(g) + O2(g)N2(g) + H2O(l)
4 NH3 + 3 O2 = 2 N2 + 6 H2O
In order to predict whether or not a single-replacement reaction takes place, we need to consult a chart which shows the ____.
Activity of the metals and halogens
Complete the following equation: Ag(s) + KNO3(aq)
Ag + KNO3 No reaction
Balance: AlCl3 + NaOH Al(OH)3 + NaCl
AlCl3 + 3 NaOH = Al(OH)3 + 3 NaCl
In order for the reaction 2Al + 6HCl 2AlCl3 + 3H2 to occur, what must be true?
Aluminum must be more active than the hydrogren.
In every balanced Atequation, each side of the equation has the same number of _____.
Atoms
The product of a combination reaction is Ba(OH)2. If one of the reactants was H2O, what was the other reactant?
BaO
What activities happen in all chemical reactions?
Bonds are broken and atoms are rearranged.
What is the balanced equation for the reaction that takes place between bromine and sodium iodide?
Br2 + 2 NaI = 2 NaBr + I2
Complete the following equation: Cu + HCl
Cu = HCl no reaction
What type of reaction is: H3PO4 + 3KOH K3PO4 + 3H2O
Double replacement
In a double-replacement reaction, the reactants are generally _____.
Ionic compounds in aqueous solutions
Tell about the decomposition of a simple binary compound.
It falls apart into its component elements
A double-replacement reaction takes place when aqueous cobalt (III) chloride reacts with aqueous lithium hydroxide. One of the products of the reaction is ____.
LiCl
Balance: N2 + H2 NH3
N2 + 3 H2 = 2 NH3
Chemical reactions produce ____.
New compounds
In the activity series of metals, which metal(s) will displace hydrogen from an acid?
Nickel, tin and lead
Is a catalyst used up in a reaction?
No
Write the skeleton equation for the reaction that takes place when solid phosphorus combines with oxygen gas to form diphosphorus pentoxide.
P + O2 P2O5
If a combination reaction takes place between potassium and chlorine, what is the product(s)?
Potasium chloride (KCl)
What are the correct formulas and coefficients for the products of this double-replacement reaction: RbOH + H3PO4
RbOH + H3PO4 = H3Rb + PO4OH
In the chemical equation H2O2(l) H2O(l) + O2(g), the H2O2 is a ____.
Reactant
The equation Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g) is an example of which type of reaction?
Single replacement
Aqueous Na2CO3 and aqueous Sn(NO3)2 in a double-replacement reaction would produce ______.
SnCO3 and NaNO3
What do each of the following mean: (s), (aq), (l), (g), Pt with an arrow under it
Solid, aqueous, liquid, gas, catalyst
Tell what is true concerning single-replacement reactions.
The more active metal or halogen takes the place of the less active metal or halogen so that you have an element and compound on the reactant side and a different element and different compound on the product side.
What statement describe double-replacement reactions?
Two things replace each other
What does the symbol "up arrow" in a chemical equation mean?
a gas is produced
What is the driving force in the following reaction: Ni(NO3)2(aq) + K2S(aq) NiS(s) + 2KNO3(aq)
a solid precipitate
The products of a combustion reaction can include ______.
carbon dioxide and water
What does a skeleton equation show?
chemical formulas involved in a chemical reaction
Chemical equations describe ____.
chemical reactions
What type of reaction is the following: 2Fe + 3Cl2 2FeCl3
combination
The equation 2C3H7OH + 9O2 6CO2(g) + 8H2O(l) is an example of which type of reaction?
combustion
In a combustion reaction, one of the reactants is _____.
oxygen
The symbol two arrows stacked on top of each other going in opposite directions indicates _____.
reversible
Chemical equations must be balanced to satisfy the _____.
the laws of conservation of mass and matter