General Chemistry 1

The theoretical yield for a reaction is 627.0 g of SF$_6$. An experiment only yields 627.8g. What is the percent yield?

P$_4$ + 5 O$_2$ $\longrightarrow$ 2 P$_2$O$_5$

Starting with 8.00 g P$_4$ and 8.00 g of O$_2$, how many grams of P$_2$O$_5$ will the reaction yield?

CuCl$_2$ + Zn $\longrightarrow$ ZnCl$_2$ + Cu

20.0 mL of 1.50 M CuCl$_2$ reacts with 3.00 Zn. How many grams of ZnCl$_2$ does the reaction yield?

3 F$_2$ + S $\longrightarrow$ SF$_6$

Sulfur hexafluoride, a very good indicator, is prepared by the reaction of sulfur with elemental fluorine. What mass of SF$_6$ can be produced from the reaction of 150 g of S with 650 g of F$_2$ ?

MM of F$_2$ = 38.00 g/mol

MM of SF$_6$ = 146.06 g/mol

4 H$_2$ (g) + CS$_2$ (g) $\longrightarrow$ CH$_4$ + 2 H$_2$S (g)

Methane and hydrogen sulfide form when hydrogen reacts with carbon disulfide. Identify the excess reagent and calculate the remaining mass after 36 L of H$_2$ reacts with 12 L of CS$_2$

Many metals react with oxygen gas to form the metal oxide. When solid calcium and oxygen gas react they form a metal oxide. You wish to calculate the mass of metal oxide that can be prepared from 4.20 g of Ca and 2.80 g of O$_2$

A. Predict the metal oxide product formed when solid calcium and oxygen gas react (include states of matter.) Balance the equation.

B. How many moles of product can be produced from the given mass of Ca?

C. How many moles of product can be produced from the given mass of O$_2$ ?

D. What is the limiting reactant?

What is the molarity of a solution containing 8.00 g NaCl in 500.0 mL?

Zn + 2HCl $\longrightarrow$ ZnCl$_2$ + H$_2$

How many grams of Zn will react with 25.0 mL of 3.0 M HCl?

What is the molarity of a solution made by dissolving 1.461 g of NaCl in 250.0 mL of water? (MM of NaCl = 58.443 g/mol)

How many grams of AgNO$_3$ are needed to prepare 250 mL of 0.0125 M AgNO$_3$? (MM of AgNO$_3$ = 169.87 g/mol)

How could 100 mL of 0.125 M H$_2$SO$_4$ solution be made from 0.500 M H$_2$SO$_4$ solution?

How many milliliters of 0.124 M NaOH contain enough NaOH to react with 15.4 mL of 0.108 M H$_2$SO$_4$ ?

2 NaOH + H$_2$SO$_4$ $\longrightarrow$ 2 H$_2$O + Na$_2$SO$_4$

How many moles of BaSO$_4$ will form if 20.0 mL of 0.600 M BaCl$_2$ is mixed with 30.0 mL of 0.500 M MgSO$_4$?

BaCl$_2$ + MgSO$_4$ $\longrightarrow$ BaSO$_4$ + MgCl$_2$

Write the complete, total, and net ionic equations for the reaction of aqueous sodium carbonate with aqueous barium nitrate.

Write the molecular equation and then the net ionic equation for the neutralization of HNO$_3$ by KOH in aqueous solution.

Write the complete, ionic, and net ionic equations for the reaction of HCl with KOH.

Write the complete, ionic, and net ionic equations for the reaction of NH$_3$with HNO$_3$ .

Write the complete, ionic, and net ionic equations for the reaction of CH$_3$NH$_2$ with HC$_2$H$_3$O$_2$ .

P$_4$ + 6 Cl$_2$ $\longrightarrow$ 4 PCl$_3$

Assign oxidation numbers for each of the atoms in the above equation.

2 MnO$_4$ + 5 H$_2$O$_2$ + 6 H $^+$ $\longrightarrow$ 5 O$_2$ + 2 Mn$^{2+}$ + 8 H$_2$O

Assign oxidation numbers for each of the atoms in the above net ionic equation. Identify which elements have been oxidized or reduced.