2. Ba(C,H,O,), ( ) + CUSO, ( ) → Cu(C,H,0,), ( ) + BaSO, () 3. ZnSO, () + 2A9NO, ( ) → Zn(NO,)2 () + Ag,SO, ( ) 4. Cu(NO,), ( ) + 2NaOH ( ) → Cu(OH), ( ) + 2NaNO, () Use the formula M,V, = M,V, to calculate the following dilution formulas. Show your work by either using Insert > Equation and the functions there, or by writing it on paper and uploading a picture of the work. 1. A stock solution of sodium sulfate, Na,SO, has a concentration of 1.50 M. The volume of this solution is 100 mL. What volume of a 0.75 M solution could be made from the stock solution? 2. 3.00 mL of a 0.25 M solution of potassium permanganate, K,MnO,, is used to make a 450.00 mL solution. What is the concentration of the new solution? 3. A hydrochloric acid solution, HCI has a concentration of 12.1 M. A 55.0 mL sample is used to make a more dilute solution. If the new solution has a concentration of 0.75 M, determine the volume of the solution. 4. A 0.75 M solution of sodium thiosulfate, Na,S,0, is used to create a more dilute solution. If 150 mL of the concentrated solution is diluted to a volume of 1500 mL, determine the concentration of the new solution. ere to search 近
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.
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