Post a New Question

Chemistry

posted by .

Just a few questions about rates of reaction.

A) Why are the units for average and instantaneous rates the same?
-because they are both measures of how quickly a reaction is occuring per unit time

B) For a given set of data, two students determined different average reaction rates. If neither student made an error in the calculations, account for the difference in their reaction rates.

C) Propose a reason for the difference in instantaneous rates at differnet points throughout a reaction.

D)When chemists compare the rates of reactions carried out under different conditions, they often compare the rates near the beginning of the reactions. What advantages do you see in this practise. Hint: think slow reactions.
-saves time

  • Chemistry -

    A) Why are the units for average and instantaneous rates the same?
    -because they are both measures of how quickly a reaction is occuring per unit time
    That sounds ok to me.

    B) For a given set of data, two students determined different average reaction rates. If neither student made an error in the calculations, account for the difference in their reaction rates.
    The rate of reaction changes with time because the concn of the reactants and products are changing. Therefore, the AVERAGE rates could have been over different time periods.

    C) Propose a reason for the difference in instantaneous rates at differnet points throughout a reaction.
    The concns are changing with time. The reaction rates are faster at the beginning.

    D)When chemists compare the rates of reactions carried out under different conditions, they often compare the rates near the beginning of the reactions. What advantages do you see in this practise. Hint: think slow reactions. The reactions are fastest at the beginning.
    -saves time

  • Chemistry -

    it really helped me and i got good mark on it. tnx

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math/unit rate

    please help me find the definition for unit rate. It depends upon what kind of unit. Go to www.google.com and type in unit rate. There is one source there for hotel unit rates, another for unit rates for the medical field, etc. You …
  2. math/rates and unit rates

    I can't figure out my homework because I don't know what rates & unit rates are.
  3. MATh/UNiT RATES

    FIND THE UNIT RATES AND WRITE THEM BOTH IN FRACTION AND WORD FORM. 7.Gabrielle bikes 78 miles in 6 hours.
  4. Accounts

    A company produces just one standard product. The company's budgeted overheads for the next financial year are £80000. Other relevant information includes: Budgeted Production: 16000 units Cost of Raw Material per unit: £4 Cost of …
  5. Chemistry-Rates of Reaction

    A chemist wishes to determine the rate of reaction of zinc with hydrochloric acid. The equation for the reaction is: Zn(s) + 2HCl(aq) ---> H2(g) + ZnCl2(aq) A piece of zinc is dropped into 1.00 L of 0.100 M HCl and the following …
  6. Chemistry

    35. In a calorimeter, the energy content of a substance is calculated from a measure of the temperature change in a known mass of a. iron b. air c. water d. steel C?
  7. Chemistry (1Question)

    This is really confusing. I know how to do the equilibrium which also has to do with reaction rates but they didb't give it to me as a choice. Please Please help me. I post other questions that i answered already but no one answered …
  8. Chemistry

    I am trying to figure out how to calculate the reaction rate. In my question the reaction rate is: 1/2x molarity of sodium thiosulfate/reaction time Then I have to compare the rates of runs 1-3 and determine the orders of the reaction. …
  9. Chemistry 12

    If two students compared their instantaneous reaction rates, would you expect their results to be the same?
  10. Chemistry

    Before a chemical reaction reaches equilibrium, A. the reaction rates of the reactants and products increase. B. the reaction rate of the reactants increases and the reaction rate of the products decreases. C. the reaction rates of …

More Similar Questions

Post a New Question