a chemical reaction will occur spontaneously or non-spontaneously is an important aspect of thermodynamics. Spontaneity is determined from free energy‚ or Gibbs free energy. The equation (1) gives the relationship of how entropy (∆S) and enthalpy (∆H) along with temperature affects the amount of free energy‚ and henceforth the spontaneity. A spontaneous process may be quick or slow‚ and it is only affected by temperature and energy‚ therefore it is not related to kinetics or reaction rate. equation
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****************** Ms. Daniel English 60 September‚ 11‚ 2012 Yours‚ Mine‚ Ours. Many people believe father’s surname should be passed on to their wives and children‚ just because that’s the right thing to do. A surname has an important role in people’s lives. It not only keeps a family legacy‚ but also keeps tradition‚ and shows family pride‚ with that been said children and wives should take the father’s or husbands last name. Views about marriage vary widely depending on what part of
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flask with an iodine crystal with a bromobenzene solution with a stir bar. Once the stirring began‚ the solution turned brown and over time began to lighten up. The color change to brown indicated that the reaction began and this is why an iodine crystal was placed in the solution. The reaction started to boil due to its own reflux so heat didn’t need to be applied. Next the anhydrous ether solution was added very slowly in a dropwise manner with a needle through the septum cap on the condenser. This
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this lab). This help us view the study of Law of Conservation of Mass‚ when either side of equation is equally balanced. The calculation for formula mass helps determine if you need to convert grams to a particular substance to moles‚ from a product. Moles are numbers that are in front of formulae. E.g.‚ 6NaCl‚ 6 is the equation for this formula. A mole would help you balance a skeleton equation‚ and also allows you to calculate how many moles are needed to take part in a chemical reaction. In the
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Title: Stoichiometry Reaction Objectives: 1. To decompose sodium hydrogen carbonate (sodium bicarbonate) by heating. 2. To accurately measure the degree of completion of the reaction by analysing the solid sodium carbonate product. 3. To calculate amount of product with given amount of reactant. 4. To determine amount of heat release in the reaction. Results: Part 1: Thermal Decomposition of NaHCO3 Materials Mass (g) Clean and dry test tube 15.1632 Clean test tube + NaHCO3 17.1647
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Introduction The purpose of this lab is to be able to observe the reaction rates of different chemical substances‚ by looking at which substance is the fastest reactant. This is what chemical kinetics is. Reaction rate is the change in the concentration of a reactant or product in a chemical reaction per unit time. In this lab the requirement was to be able to calculate each Average reaction rate which is the change in reactant or product concentration at a given time interval. Some equations that
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along my life. Everyday‚ I experience and decide. I already see every circumstances coming right through me. And I guess for sure‚ other people think likewise. Indeed‚ all of these are just a matter of thinking. Life is just a matter of setting off your mind to think‚ a thinking which is critical enough to suffice satisfaction in life. As I journey ahead‚ there is a thought that I always bring along in my head: That if something ever happens to me‚ I can either let it define me‚ let it destroy
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1- The reaction HCl + KOH KCl + H2O is a a. synthesis reaction c. neutralization reaction b. ionization reaction d. decomposition reaction 2- What is the value of the self-ionization constant of water? a. 0 c. 1.00 107 b. 1.00 1014 d. 55.4 3- Pure water contains a. water molecules only. b. hydronium ions only. c. hydroxide ions only. d. water molecules‚ hydronium ions‚ and hydroxide ions
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Chemical reactions are the basis of life on earth. As human beings‚ we are little more than the naturally abundant elements of which we are composed and the reactions between the compounds that they form. After all‚ how could life exist without water? Oxygen transport in a body the size of the human body would be impossible without the aid of a complex like hemoglobin. Besides being the basis of many of life’s intangibles‚ chemistry also plays an active role in our daily lives. Take for instance
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I2 No reaction‚ starch will remain white Reaction; black deposits on the glass tube. Starch turns black Food coloring + NaOCl No reaction; will turn lighter Reaction; the solution that was dark blue turned into light blue Food coloring + CH3COOH No reaction; color will turn lighter No reaction; when both combined‚ the color (dark blue) remained the same Food coloring + NaOCl + CH3COOH No reaction; solution will remain blue Reaction; solution turns light gray Red cabbage + NH3 No reaction; solution
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