Lesson 5 Quiz

Consider the titration of 15.00 mL of NaCl of unknown concentration with 20.22 mL of 0.2503 M AgNO3 to reach an endpoint. What is the concentration of the NaCl solution? AgNO3(aq) + NaCl(aq)⟶AgCl(s) + NaNO3(aq)

0.3374 M

Question 8 What is the mass of chlorine gas necessary to react with 12.0g of sodium metal, Na, to produce NaCl?

18.5 g

What volume of 0.200 M hydrochloric acid solution can be prepared from the HCl produced by the reaction of 25.0g of NaCl with excess sulfuric acid? NaCl(s) + H2SO4(l)⟶HCl(g) + NaHSO4(s)

2.14 L

What is the mass of Mg required to react with 7.50g of HCl and produce MgCl2 and H2?

2.50 g

What volume of 0.08892 M HNO3 is required to react completely with 0.2352g of potassium hydrogen phosphate? 2HNO3(aq) + K2HPO4(aq)⟶H2PO4(aq) + 2KNO3(aq)

30.37 mL

Balance the following reaction: TiCl4(s) + H2O(g)⟶TiO2(s) + HCl(g)

TiCl4(s) + 2H2O(g)⟶TiO2(s) + 4HCl(g)

Balance the following reaction: Sc2O3(s) + SO3(I)⟶Sc2(SO4)3(s)

Sc2O3(s) + 3SO3(I)⟶Sc2(SO4)3(s)

Complete and balance the following oxidation-reduction reaction: Sn(s) + I2(s)⟶

Sn(s) + 2I2(s) → SnI4(s)

Indicate what type(s) of reaction each of the following represents: H2O(g) + C(s)⟶CO(g) + H(g) 2KClO3(s)⟶2KCl(s) + 3O2(g) Al(OH)3(aq) + 3HCl(aq)⟶AlCl3(aq) + 3H2O(l) Pb(NO3)2(aq) + H2SO4(aq)⟶PbSO4(s) + 2HNO3(aq)

(1) oxidation-reduction, (2) oxidation-reduction, (3) acid-base, (4) precipitation

Solid aluminum metal reacts with solid diatomic iodine to form solid Al2I6. Write a balanced equation describing the chemical reactions.

2Al(s) + 3I2(s) → Al2I6(s)

In a laboratory experiment, the reaction of 3.0 mol of H2 with 2.0 mol of I2 produced 2.0 mol of HI. Determine the percent yield for this reaction.

50%

Question 10 I2 is produced by the reaction of 0.5235 mol of CuCl2 according to the following equation: 2CuCl2 + 4KI⟶2CuI + 4KCl + I2. What is the mass of the I2 produced?

66.43 g

Balance each of the following equations according to the half-reaction method: H2O2(aq) + MnO4−(aq)⟶Mn2+(aq) + O2(g) (in acid)

5H2O2(aq) + 2MnO4−(aq) + 6H3O+(aq) ⟶ 2Mn2+(aq) + 5O2(g) + 14H2O(l)

A sample of 0.53g of carbon dioxide was obtained by heating 1.31g of calcium carbonate. What is the percent yield for this reaction? CaCO3(s)⟶CaO(s) + CO2(s)

92%

Determine the oxidation states of the elements in the following compounds: GdCl3 and Mg2Si.

Gd +3, Cl -1, Mg +2, Si -4