really need help!! science10-classifying chemical reactions?

i need help badly i tired and i cant do it. this is what its asking

classify each of the following chemical reactions as a synthesis(S), decomposition(D), single replacement(SR), double Replacement(DR), or neutralization(N).Then WRITE A BALANCED EQUATION for each of the word equations.

these are the questions

5.lead(II) nitrate + ammonium sulphide = cadmium(II)sulphide+ammonium nitrate

6.magnesium+silver nitrate = silver+magnesium nitrate

7.cadmium(II)nitrate+ammonium sulphide = cadmium(II)sulphide+ammonium nitrate

8.tin(IV)hydroxide+hydrogen bromide = water+tin(IV) bromide

9.sodium+oxygen = sodium oxide

10.sodium nitride = sodium+nitrogen

11.calcium hydroxide+phophoric acid = water+calcium phosphate

12.barium chloride+sodium carbonate = barium carbonate +sodium chlroide

13.zinc+nickel(II)nitrate = zinc nitrate + nickel

14.antimony+iodine = antimony(III)iodine

15.carbon dioxide = carbon+oxygen

16.iron(III)sulphate+lead = lead(II)sulphate+iron

17.barium nitrate + ammonium carbonate = ammonium nitrate+barium carbonate

18.zinc hydroxide+hydrochloric acid = water+zinc chloride

19.ammonium carbonate+magnesium chlroide = ammonium chloride + magnesium carbonate

20.rubdium hydroxiude+sulphuric acid = water +rubidium sulphate

i really appreciate this alot thank you

1 Answer

  • 8 years ago
    Favorite Answer

    I will not do these for you because you will learn nothing: Here is an excellent checklist on how to determine the different types of reaction: Now go through each reaction above and identify the type of reaction. Print this list and keep it for future use:

    All chemical reactions can be placed into one of six categories. Here they are, in no particular order:

    1) Combustion: A combustion reaction is when oxygen combines with another compound to form water and carbon dioxide. These reactions are exothermic, meaning they produce heat. An example of this kind of reaction is the burning of napthalene:

    C10H8 + 12 O2 ---> 10 CO2 + 4 H2O

    2) Synthesis: A synthesis reaction is when two or more simple compounds combine to form a more complicated one. These reactions come in the general form of:

    A + B ---> AB

    One example of a synthesis reaction is the combination of iron and sulfur to form iron (II) sulfide:

    8 Fe + S8 ---> 8 FeS

    3) Decomposition: A decomposition reaction is the opposite of a synthesis reaction - a complex molecule breaks down to make simpler ones. These reactions come in the general form:

    AB ---> A + B

    One example of a decomposition reaction is the electrolysis of water to make oxygen and hydrogen gas:

    2 H2O ---> 2 H2 + O2

    4) Single displacement: This is when one element trades places with another element in a compound. These reactions come in the general form of:

    A + BC ---> AC + B

    One example of a single displacement reaction is when magnesium replaces hydrogen in water to make magnesium hydroxide and hydrogen gas:

    Mg + 2 H2O ---> Mg(OH)2 + H2

    5) Double displacement: This is when the anions and cations of two different molecules switch places, forming two entirely different compounds. These reactions are in the general form:

    AB + CD ---> AD + CB

    One example of a double displacement reaction is the reaction of lead (II) nitrate with potassium iodide to form lead (II) iodide and potassium nitrate:

    Pb(NO3)2 + 2 KI ---> PbI2 + 2 KNO3

    Note that H2O is not a product of a double displacement reaction - see below:

    6) Acid-base: This is a special kind of double displacement reaction that takes place when an acid and base react with each other. The H+ ion in the acid reacts with the OH- ion in the base, causing the formation of water. Generally, the product of this reaction is some ionic salt and water:

    HA + BOH ---> H2O + BA

    One example of an acid-base reaction is the reaction of hydrobromic acid (HBr) with sodium hydroxide:

    HBr + NaOH ---> NaBr + H2O

    Handy Checklist for figuring out what type of reaction is taking place:

    Follow this series of questions. When you can answer "yes" to a question, then stop!

    1) Does your reaction have oxygen as one of its reactants and carbon dioxide and water as products? If yes, then it's a combustion reaction

    2) Does your reaction have two (or more) chemicals combining to form one chemical? If yes, then it's a synthesis reaction

    3) Does your reaction have one large molecule falling apart to make several small ones? If yes, then it's a decomposition reaction

    4) Does your reaction have any molecules that contain only one element? If yes, then it's a single displacement reaction

    5) Does your reaction have water as one of the products? If yes, then it's an acid-base reaction

    6) If you haven't answered "yes" to any of the questions above, then you've got a double displacement reaction

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