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initial temperature = 24.3 degree celcuis final temperature = 35.7 degree celcuis 50.0 ml of 0.740 M...

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Chemistry

initial temperature = 24.3 degree celcuis

final temperature = 35.7 degree celcuis

50.0 ml of 0.740 M phospheric acid +50.0ml of 2.00M of sodiumhydroxide

change in temperature = 11.4 degree celcius

calculate the following

1- what is the mass mixture in thecup ?

2-heat flowof the system in cup in KJ?

3- heat of system in cup (qrxn)in KJ?

4-initial moles of H3PO4 in the cup?

5- initial moles of NaOH in the cup?

6-delta H rxn in KJ(experimental)?

7-delta Hrxn in KJ (theoretical)

8- percent error?

Answer & Explanation Solved by verified expert
4.3 Ratings (796 Votes)
Ans 1 Assuming the reactants have specific gravity equal to that of water 1 g mL the mass of reaction mixture 50 g phosphoric acid solution 50 g NaOH solution 100 g Ans 2 Heat flow released by reaction system Using q Where q heat content m mass in gram c specific heat T temperature    See Answer
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