Use the periodic table to answer the following question: If 1.48 g of Cl2 reacts with...
Use the periodic table to answer the following question:
If 1.48 g of Cl2 reacts with excess P, what is the total change in enthalpy in kilojoules?
2P+5Cl2→2PCl5
ΔH=−886kJ
Round your answer to two decimals places. Include a negative sign if appropriate.
Homework Answers
2P+5Cl2----------->2PCl5 ΔH=−886kJ
5 moles of Cl2 react with exces of P to released heat energy is -886KJ
5*71g of Cl2 react with excess of P to released heat energy is -886KJ
1.48g of Cl2 react with excess of P to released heat energy is = -886*1.48/5*71 = -3.69KJ
ΔH = -3.69KJ >>>>>answer
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A chemist measures the enthalpy change ΔH during the following reaction: 2Na (s) + Cl2 (g)...
A chemist measures the enthalpy change
ΔH
during the following reaction:
2Na
(s)
+
Cl2
(g)
→
2NaCl
(s)
=ΔH−822.kJ
Use this information to complete the table below. Round each of
your answers to the nearest
/kJmol
.
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2Na(s)+Cl2(g)?2NaCl(s)
using the data from the following table:
Substance
?H?f (kJ/mol)
?G?f (kJ/mol)
S? [J/(K?mol)]
Na(s)
0.00
0.00
51.30
Cl2(g)
0.00
0.00
223.1
NaCl(s)
-411.0
-384.0
72.10
Express your answer to four significant figures and include the
appropriate units.
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A chemist measures the enthalpy change
ΔH
during the following reaction:
2Na
(s)
+
Cl2
(g)
→
2NaCl
(s)
=ΔH−822.kJ
Use this information to complete the table below. Round each of
your answers to the nearest
/kJmol
.
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B. Calculate the standard entropy change for the reaction
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using the data from the following table:
Substance
?H?f (kJ/mol)
?G?f (kJ/mol)
S? [J/(K?mol)]
Na(s)
0.00
0.00
51.30
Cl2(g)
0.00
0.00
223.1
NaCl(s)
-411.0
-384.0
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Express your answer to four significant figures and include the
appropriate units.
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