college chemistry

if 2.00g of Zn is allowed to react with 2.00g of CuSO4 according to the equation CuSO4(aq) + Zn(s)-----> ZnSO4 (aq)+ Cu(s)
how many grams of Zn will remain after the reaction is complete ?

  1. 👍 0
  2. 👎 0
  3. 👁 4,069
  1. This is a limiting reagent problem. I know that because amounts are given for BOTH reactants. However since the problem asks for the amount of Zn remaining, one can assume that CuSO4 is the limiting reagent. I will show how we can confirm that.

    CuSO4(aq) + Zn ==> ZnSO4(aq) + Cu(s)
    mols CuSO4 = g/molar mass = 2.00/about 159.6 = 0.125

    mols Zn = 2.00/65.4 = 0.0306

    Convert mols of each to mols Cu produced.
    0.0125 mols CuSO4 x (1 mol Cu/1 mol CuSO4) = 0.0125 mols Cu
    0.0306 mols Zn x (1 mol Cu/1 mol Zn) = 0.0306 mols Cu
    Of course both answers can't be correct; the correct answer in limiting reagent problems is ALWAYS the smaller value and the reagent producing that number is the limiting reagent. Therefore, 0.0125 mols Cu will be formed and CuSO4 is the limiting reagent. All of this just confirms what we knew at the beginning.

    How much Zn remains unreacted? How many mols Zn were used? That will be
    0.0125 mols Cu x (1 mol Zn/1 mol Cu) = 0.0125 mols Zn used.
    mols Zn remaining = mols Zn initially-mols Zn used = 0.0306-0.0125 = ?
    You can convert to grams by g Zn = mols Zn x atomic mass Zn.
    mols Zn x (1 mul

    1. 👍 1
    2. 👎 6
  2. explain the orgin of X-rays

    1. 👍 0
    2. 👎 1

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    heptane and water do not mix, and heptane has a lower density (0.684g/mL) than water (1.00g/mL). A 100mL graduate cylinder with an inside diameter of 3.10 cm contains 39.90g of heptane and 34.00g of water. What is the combined

  2. chemistry

    Please help with this problem =) The combustion of liquid chloroethylene, C2H3Cl, yields carbon dioxide, steam, and hydrogen chloride gas. I. write a balanced equation for the reaction (I sorta get this part) II. How many moles of

  3. Chemistry

    When 2.50 mol of Mg3N2 are allowed to react according to the following equation, how many moles of H2O also react? Mg3N2 + 6H2O ---> 3Mg(OH)2 + 2NH3

  4. Chemistry

    Find moles of O atoms in 9.00g of Mg(NO3)2.

  1. Chemistry

    How many moles of H2O are in 3.00L of water? (d=1.00g/mL)

  2. Chemistry

    Visit: VIRTUAL LAB: Textbook Style Limiting Reagents Problems on Chem collective Windows and Macintosh users: Please use Firefox or Chrome web browser. The simulation will run on most laptops, desktops and touch-enabled devices

  3. Chemistry

    Visit: VIRTUAL LAB: Textbook Style Limiting Reagents Problems on Chem collective Windows and Macintosh users: Please use Firefox or Chrome web browser. The simulation will run on most laptops, desktops and touch-enabled devices

  4. Chemistry

    SO2 (5.00g) and CO2 (5.00g) are places in a 750.9ml container at 50.0 the partial pressure of SO2 in a container was...?

  1. Chemistry

    How many atoms of nitrogen are in 3.00g of N2O5?

  2. chemistry I

    using this equation: CH4+2Cl2-> CH2Cl2+2HCl. If 6.00g of Ch4 are mixed with 6.00g of Cl2, how much HCl can be made?

  3. Chemistry

    Problem: Assume 200.0 mL of 0.400M HCl is mixed with 200.0 mL of 0.400M NaOH in a coffee-cup calorimeter. The temperature of the solutions before mixing was 25.10°C; after mixing and allowing the reaction to occur, the

  4. Chemistry

    Suppose you have 5.00g of powdered magnesium metal, 1.00L of 2.00M potassium nitrate solution, and 1.00L of a 2.00M silver nitrate solution. a) Which one of the solutions will react with the magnesium powder? I don't understand

You can view more similar questions or ask a new question.