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Double displacement homework help? (urgent)

  1. Jan 9, 2017 #1
    I am so stressed right now and am on the verge of a nervous breakdown. My chemistry homework is just really confusing and I need to pass this class, could someone please help me out? I need to hand this in tomorrow and I have already answered the questions myself but I feel like my answers are all wrong. I would appreciate it if someone could show me how to solve these so I know that when I hand this in tomorrow it won't bring my grade down even lower.

    Complete and balance following equations: (find reactants and products)
    1.Reactants: KOH+H2SO4
    2.Reactants: FeS+HCl
    3.Reactants: NaCl+H2SO4

    If reaction occurs, list products. If no reaction occurs, state "no reaction":
    1.Reaction: CaBr2+KOH
    2.Reaction: Cu(OH)2+HC2H3O2
    3.Reaction: FeS+2HCl
    4.Reaction: Ca(NO3)2+2HCl

    My attemps: 1. H2SO4(aq) + 2KOH(aq) --> K2SO4(aq) + 2H2O(l)
    2. FeS + 2HCl ------> FeCl2 + H2S
    3. 2NaCl + H2SO4 = Na2SO4 + 2HCl(g)

    1. CaBr2 + KOH = CaOH + KBr2
    2. Cu(OH)2 + 2 HC2H3O2 = Cu(C2H3O2)2 + 2 H2O
    3. ?
    4. No reaction ?

    Idk what it nmeans by listing products :/
    Last edited: Jan 9, 2017
  2. jcsd
  3. Jan 9, 2017 #2


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    Please post your answers - forum rules!
  4. Jan 9, 2017 #3
    What part do you struggle with exactly? Part where you need to find the products? Or part where you need to balance the equation?
  5. Jan 9, 2017 #4
    Both, but finding products in particular. I swear I'm not an airhead lol, I had a medical issues which caused me to miss school and now I'm so behind. :cry:
  6. Jan 9, 2017 #5
    Sorry, I'm a new member so I wasn't aware of the rules. I just posted my attempts.
  7. Jan 9, 2017 #6


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    I'm not much of a chemist, but those look right to me.
    I don't think so. See http://www.chemguide.co.uk/inorganic/group7/halideions.html.
    A problem with the valencies?

    The rest I leave to others.
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