Ca(NO3)2 (aq) + 2 KIO3(aq) → Ca(IO3)2 (s) + 2 KNO3(aq) Calcium nitrate Potassium Iodate 1.00 0,200 10.0 25.0 0.0100 0.00500 LIMITING REAGENT Limiting reagent in reaction e potassium iodate THEORETICAL YIELD The theoretical yield is the number of moles of calcium iodate for 100% yield. 0.00250 Theoretical yield, (mol) 1.949 x Unrounded value REAGENT DATA Concentration, (mol L-¹) Volume, (mL) Number of moles, (mol) A ✔ D PERCENTAGE YIELD Mass of calcium iodate produced, (g) Molar mass f calcium iodate, g mol-¹ Number of moles of calcium iodate produced, (mol) Percentage yield, (%) A A e 6 • • Rounded value
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![Ca(NO3)2
(aq) + 2 KIO3 (aq) → Ca(IO3)2 (s) + 2 KNO3 (aq)
Calcium nitrate
Potassium Iodate
1.00
0.200
10.0
25.0
0.0100
0.00500
LIMITING REAGENT
Limiting reagent in reaction
potassium iodate
THEORETICAL YIELD
The theoretical yield is the number of moles of calcium iodate for 100% yield.
0.00250
Theoretical yield, (mol)
1.949
X
Unrounded value
REAGENT DATA
Concentration, (mol L-¹)
Volume, (mL)
Number of moles, (mol)
←I
PERCENTAGE YIELD
Mass of calcium iodate produced, (g)
Molar mass of calcium iodate, g mol-¹
Number of moles of calcium iodate produced, (mol)
Percentage yield, (%)
2
6
Rounded value
2
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