acid is of Hesss the mage on the right is the final acid delivered from the bure
ID: 698895 • Letter: A
Question
acid is of Hesss the mage on the right is the final acid delivered from the buret? 1) During the experiment Enthaby ofa An reading delivered from a buret reading. What was the total volume a) 29.40mt b) 29.60 ml ) 31.00 ml ouret. The image on the left is the intial buret of hydrochloric 28.00 mL Reaction-An Appication of Hess's Law, 1.009 g of solid NaOH was in the reaction? Use the ny o with 25.07 mL of 1.009 M periodic table on page 1 to determine the appropriate a) Sodium hydroxide, NaOH b) Hydrochloric acid, HC c) Water aqueous hydrochloric acid. What is the limting reactant molar mass There is no limiting reactant. of a Reaction- An Application of Hesss Law to recorded and a plot similar to the one below was 2) Three reactions were conducted during the experiment Enchap demonstrate Hess's Law. For each reaction, heat generated was generated in LoggerPro. Messurements of the Heats of Reaction: Hem's Lw Which reaction is represented in Plot C in the above graph? 22) In the experiment, Chemical Kinetics- Determination of a Rate Law, what was the indicator of the Clock reaction with the product triodide, IP to create the dark blue color of the endpoint? a) Ammonium sulfate, (NH4) SO b) Sodium thiosulfate, Na:S2O c) Starch d) Ammonium peroxydisulfate, (NH) S.O 3) The initial rate of a reaction can be experimentally determined by a) Recording the time to react a very large amount of reactant in a standard solution. b) Recording the time to react a small amount of reactant using the Clock reaction. c) Recording the temperature change of a solution when a solute is added. d) Recording the temperature of a reaction as a function of time.Explanation / Answer
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1.009 g NaOH
moles of NaOH= 1.009 / 40
= .025
moles of HCl = 1.009 * 25.07 * 10^-3
=.025
Since moles of HCl and NaOH are equal there is no limiting reactant.
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Choice a is the corect one
becuse the graph correspond to that reaction with lowest energy release, as the temp rise is lowest for this one.
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b. Starch is used, which reacts with iodine to give blue color at the end point.
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b.
Recording time to react a small amount of reactant using clock reaction
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