by Yeah.. I need the answers, but also a step by step instruction on how to solve it
When a number is in parentheses (ex. (2)), it's a subscript
Stoichiometry
32. What mass of BaSO(4) is produced when 25.0g of sulfuric acid (H(2)SO(4)) reacts with an excess of barium hydroxide Ba(OH)(2). First, write a balanced equation.
35. Silver nitrate and aluminum chloride react with each other by exchanging anions.
36. How much product is actually obtained if the percent yield is 92.6%? (Hint: Find the theoretical yield first)
37. The reaction of 2.5g of aluminum with 2.5 of oxygen (actually) produces 3.5g of aluminum oxide. Calculate the percent yield of aluminum oxide.
38. The combustion of 75g of calcium hydroxide and 150g of sodium phosphate produces 75g of calcium phosphate. Calculate the percent yield. Write the balanced chemical equation first.
39. Given this equation: 2KI+Pb(NO(3))(2) -> PbI(2)+2KNO(3) calculate mass of PbI(2) produced reacting of 30.0g KI with excess Pb(NO(3))(2)
40. Burning coal and oil in a power plant produces pollutants such as sulfur dioxide, SO(2). The sulfur-containing compound can be removed from other waste gases, however, by the following reaction:
2SO(2)(gas)+2CaCO(3)(solid)+O(2)(gas) -> 2CaSO(4)(solid)+2CO(2)(gas)
Molar Masses:.......64.07..............100.1...............32...................136.2...............44.01......
xxx(A) Name the compounds involved in the reaction
xxx(B) What mass of CaCO(3) is required to remove 155g of SO(2)?
xxx(C) What mass of CaSO(4) is formed when 155g SO(2) is consumed?
41. Disulfur dichloride, which has a revolting smell, can be prepared by directly combining S(8) and Cl(2), but it can also be made by the following reaction:
Assume you begin with 5.23g of SCl(2) and excess NaF. What is the theoretical yield of S(2)Cl(2)? If only 1.19g of S(2)Cl(2) is obtained, what is the percent yield of the compound?
Equilibrium/Acids-Bases
50. Predict the effect of each of the stresses listed below will have on the following equilibrium system:
(II) Decrease [HI]
(III) Removal of heat (temperature drop)
51. In the above equilibrium system, how will the [I(2)] be affected by the following:
(I) Decrease in heat
(II) Decrease in [H(2)]
(III) Decrease in [HI]
52. Calculate K(of the equation) for the following if [SO(3)]= 0.25M and [SO(2)]=[O(2)]= 0.25M
53. A solution has an [OH-] of 2.5x10^(-11) M. What is the [H(3)O+]? What is the pH? What is the pOH?
54. Identify the conjugate acid and base in the following:
When a number is in parentheses (ex. (2)), it's a subscript
Stoichiometry
32. What mass of BaSO(4) is produced when 25.0g of sulfuric acid (H(2)SO(4)) reacts with an excess of barium hydroxide Ba(OH)(2). First, write a balanced equation.
35. Silver nitrate and aluminum chloride react with each other by exchanging anions.
AgCl+AlCl(3) -> Al(NO(3))+AgCl
What mass of Ag Cl is produced when 4.22g of silver nitrate reacts with 7.73g of aluminum chloride? Balance the equation first.36. How much product is actually obtained if the percent yield is 92.6%? (Hint: Find the theoretical yield first)
GeH(4)+3GeF(4) -> 4GeF(3)H
37. The reaction of 2.5g of aluminum with 2.5 of oxygen (actually) produces 3.5g of aluminum oxide. Calculate the percent yield of aluminum oxide.
4Al+3O(2) -> 2Al(2)O(3)
38. The combustion of 75g of calcium hydroxide and 150g of sodium phosphate produces 75g of calcium phosphate. Calculate the percent yield. Write the balanced chemical equation first.
39. Given this equation: 2KI+Pb(NO(3))(2) -> PbI(2)+2KNO(3) calculate mass of PbI(2) produced reacting of 30.0g KI with excess Pb(NO(3))(2)
40. Burning coal and oil in a power plant produces pollutants such as sulfur dioxide, SO(2). The sulfur-containing compound can be removed from other waste gases, however, by the following reaction:
2SO(2)(gas)+2CaCO(3)(solid)+O(2)(gas) -> 2CaSO(4)(solid)+2CO(2)(gas)
xxx(A) Name the compounds involved in the reaction
xxx(B) What mass of CaCO(3) is required to remove 155g of SO(2)?
xxx(C) What mass of CaSO(4) is formed when 155g SO(2) is consumed?
41. Disulfur dichloride, which has a revolting smell, can be prepared by directly combining S(8) and Cl(2), but it can also be made by the following reaction:
3SCl(2)(liquid)+4NaF(solid) -> SF(4)(gas)+S(2)Cl(2)(liquid)+4NaCl(solid)
Assume you begin with 5.23g of SCl(2) and excess NaF. What is the theoretical yield of S(2)Cl(2)? If only 1.19g of S(2)Cl(2) is obtained, what is the percent yield of the compound?
Equilibrium/Acids-Bases
50. Predict the effect of each of the stresses listed below will have on the following equilibrium system:
H(2)(gas)+I(2)(gas) <-> 2HI(gas)+heat (exotermic!)
(I) Increase [I(2)](II) Decrease [HI]
(III) Removal of heat (temperature drop)
51. In the above equilibrium system, how will the [I(2)] be affected by the following:
(I) Decrease in heat
(II) Decrease in [H(2)]
(III) Decrease in [HI]
52. Calculate K(of the equation) for the following if [SO(3)]= 0.25M and [SO(2)]=[O(2)]= 0.25M
SO(2)(gas)+O(2)(gas) <-> 2SO(3)(gas)+heat
53. A solution has an [OH-] of 2.5x10^(-11) M. What is the [H(3)O+]? What is the pH? What is the pOH?
54. Identify the conjugate acid and base in the following:
H(2)SO(4)+H(2)O <-> H(3)O+HSO(4) ^(-1)
