Write an Equation for the Reaction that Takes Place when an Aqueous Solution of (NH4)2SO4 is Mixed with an Aqueous Solution of Pb(C2H3O2)2.

K2SO4(aq) + Ba(NO3)2(aq) ® 2 KNO3(aq) + BaSO4(s)

Na2CO3(aq) + 2 HCl(aq) ® 2 NaCl(aq) + CO2(g) + H2O(l)

Write the ionic and the net ionic equations:

K2SO4(aq) + Ba(NO3)2(aq) ® 2 KNO3(aq) + BaSO4(s)

2K+(aq) + SO42−(aq) + Ba2+(aq) + 2NO3−(aq) ® 2K+(aq) + 2NO3−(aq) + BaSO4(s)

Ba2+(aq) + SO4-2(aq)® BaSO4(s)

Na2CO3(aq) + 2 HCl(aq) ® 2 NaCl(aq) + CO2(g) + H2O(l)

2Na+(aq) + CO32−(aq) + 2H+(aq) + 2 Cl−(aq) ® 2Na+(aq) + 2Cl−(aq) + CO2(g) + H2O(l)

CO3-2(aq) + 2 H+1(aq) ® CO2(g) + H2O(l)

Write the Molecular, Ionic, and Net-Ionic Equation for the Reaction of Aqueous Nitric Acid with Aqueous Calcium Hydroxide

  1. Write the formulas of the reactants.

HNO3(aq) + Ca(OH)2(aq) ®

a.Determine the ions present when each reactant dissociates.

(H+ + NO3−) + (Ca2+ + OH−) ®

  1. Exchange the ions, H+1 combines with OH− to make H2O(l).

(H+ + NO3−) + (Ca2+ + OH−) ® (Ca+2 + NO3−) + H2O(l)

  1. Write the formula of the salt product.

Cross charges and reduce.

HNO3(aq) + Ca(OH)2(aq) ® Ca(NO3)2 + H2O(l)

  1. Balance the equation.

May be quickly balanced by matching the numbers of H and OH to make H2O.

Coefficient of the salt is always 1.

2 HNO3(aq) + Ca(OH)2(aq) ® Ca(NO3)2 + 2 H2O(l)

  1. Determine the solubility of the salt.

Ca(NO3)2 is soluble.

a.Write an (s) after an insoluble salt and an (aq) after a soluble salt.

2 HNO3(aq) + Ca(OH)2(aq) ® Ca(NO3)2(aq) + 2 H2O(l)

  1. Dissociate all strong electrolytes to get complete ionic equation.

HNO3 is a strong acid, Ca(OH)2 and Ca(NO3)2 are ionic.

Not H2O.

2H+(aq) + 2NO3−(aq) + Ca2+(aq) + 2OH−(aq) ® Ca2+(aq) + 2NO3−(aq) + H2O(l)

  1. Eliminate spectator ions to get net-ionic equation.

2 H+(aq) + 2 OH−(aq) ® 2 H2O(l)

H+(aq) + OH−(aq) ® H2O(l)

Practice—Complete and Balance These Acid–Base Reactions.

NH4OH(aq) + H2SO4(aq) ®

Al(OH)3(aq) + H2SO3(aq) ®

Ba(OH)2(aq) + H2SO4(aq) ®

2 NH4OH(aq) + H2SO4(aq) ® (NH4)2SO4(aq) + 2 H2O(l)

2 Al(OH)3(aq) + 3 H2SO3(aq) ® Al2(SO3)3(s) + 6 H2O(l)

Ba(OH)2(aq) + H2SO4(aq) ® BaSO4(s) + 2 H2O(l)

PbS(s) + H2SO4(aq) 

HNO3(aq) + NaHCO3(aq) 

PbS(s) + H2SO4(aq)  PbSO4(s) + H2S(g)

HNO3(aq) + NaHCO3(aq)  NaNO3(aq) + CO2(g) + H2O(l)

Gas Laws worksheet 10/23/17 Name______

1)A tire contains 2.00L of air at 300.0K, if the volume in the tire decreased to 1.50L, what must the new temperature be?

2)Luis has 3.5 mol of H2 gas at STP. What volume will this gas occupy?

3)Jim-Bob has revved his engine enough so that the internal temperature and pressure of his engine are 700.0K and 200.0kPa. If the temperature outside was 295K before Jim-Bob got into his car, what was the internal pressure in his engine?

4)Jose wants to cook up some steaks for Super Bowl Sunday. He looks at his BBQ and notices that his Propane (C3H8) tank contains 10.0L of the gas under 3.0atm at room temperature. How many grams of propane does Jose own?

5)Today, the barometer reads 750mmHg and the thermometer says that it is 65ºF. At 6am, the barometer read 700 mmHg.What was the temperature at that time?

6)Rhonda’s helium balloon has a volume of 2.00L at 2.00atm and 395K. If the temperature is raised to 500.K and the gas is compressed to 1.00L, what is the new pressure?

7)A 1.0L cylinder contains 2.0 moles of gas at 250K and 1.0atm. If the temperature and pressure are increased to 350K and 3.5atm and the new volume of gas is 0.50L, how much gas was added/removed?

8)You have a 2L cylinder of gas that is under 100 kPa of pressure. If you compress the gas to 1L, what will the new pressure be?

9)You have a 10.0L container of gas under 505 torr of pressure. If you increase the pressure to 1155 torr, what will the new volume be?

10)A cylinder contains 5.00L of gas at 225K. If the temperature is increased to 345K, what will the new volume be?

11)A High-Performance Bicycle Tire Has a Pressure of 125 psi. What Is the Pressure in mmHg?

12)Joe’s balloon contains 1.0 mole of helium at STP. If Joe blows another mole of helium into the balloon, heats it to 350K, and decreases the volume to 0.75 L, what will the new pressure be inside the balloon?

13)A ball contains 3.0L of air at 32ºF, if the volume increases to 5L, what must the temperature have changed to?

14)Rosy has a 5.0L tank of H2 gas. If the pressure inside the tank is 800.0torr and the temperature is 300.0K, how many moles of hydrogen does her tank contain?

15)Chris’ favorite meal is a bean and cheese burrito from Del Taco. Unfortunately, this means that his intestines were filled with 1.50 moles of CH4 gas under 2atm of pressure. What is the volume of gas that occupies his bowels? *Assume roomtemperature*

16)Scuba Divers use gas mixtures of O2 and He. If a diver breathes in a mixture that has a total pressure of 6.5 atm and a partial pressure from O2 of 1.2 atm, what is the partial pressure of He?