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    Solutions, Precipitations, and Balancing Equations

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    1 - Presuming that these molecules are soluble, tell what ions are "produced" upon dissolving.

    Rb2SO4 NaC 2H3O 2 AlCl3

    2 - Calculate the molarity of
    13.2 g of NaOH dissolved in 250 ml of water
    27 g of C6H 12O6 in 400 ml of water

    3 - How many grams of BaCl2 would you need to make 200 ml of a 0.75 M solution ?

    4 - If acetic acid is being stored as a 6M solution, how many ml would you need to make up 200 ml of a 0.17 M solution ?

    5 - What mass of aluminum hydroxide can be made from 50 ml of 0.25M Al(NO3)3 and 100 ml of 0.1 M KOH?

    6 - What if any precipitate will form from the mixing of these pairs of solutions ?
    MgCl2 & AgNO3 KCl & (NH4)2SO4

    7 - Na2CO3 + Pb(NO3)2
    a. What ions do these split into in water
    b. Write a balanced molecular equation
    c. Write a complete ionic equation
    d. Write a net ionic equation

    8 - Write a molecular equation and a net ionic for the combining of (NH4)2S and CoCl2

    9 - Complete and balance the following acid-base reactions

    HCl + Ca(OH)2 ----->

    H2SO4 + Sr(OH)2 ----->

    10 - Write a balanced equation for the reaction of sodium bicarbonate and hydrochloric acid

    11 - Assign oxidation states for each element
    H2
    MnO2
    MnO4-
    HCO3-
    SCl5

    12 - Fe2O3 + 3 CO -----> 2 Fe + 3 CO2

    Identify the atoms that are oxidized and reduced and ID the oxidizing agents and the reducing agents.

    13 - What volume of 0.150 HNO3 solution is need to neutralize 25.0 ml of 0.103 M NaOH?

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    https://brainmass.com/chemistry/stoichiometry/solutions-precipitations-balancing-equations-545953

    Solution Preview

    1- Presuming that these molecules are soluble, tell what ions are "produced" upon dissolving.

    Rb2SO4 NaC 2H3O 2 AlCl3

    From Rb2SO4, we could obtain Rb+, SO42- ions
    From NaC3H3O2, we could obtain Na+ and C2H3O2- ions.
    From AlCl3, we could obtain Al3+ and Cl- ions.
    2- Calculate the molarity of

    13.2 g of NaOH dissolved in 250 ml of water

    Molar amount of NaOH: 13.2/40=0.33 mol
    Molarity of NaOH: 0.33/0.25=1.32 M

    27 g of C6H 12O6 in 400 ml of water

    Molar amount of C6H12O6: 27/(30*6)=0.15 mol
    Molarity of C6H12O6: 0.15/0.4=0.375 M

    3- How many grams of BaCl2 would you need to make 200 ml of a 0.75 M solution ?

    Molar amount: 0.2*0.75=0.15 mol
    Mass of BaCl2: 208.23*0.15=31.2345 g.

    4- If acetic acid is being stored as a 6M ...

    Solution Summary

    The molecules which are soluble are determined. Solutions, precipitations and balancing equations are provided.

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