Ethyl butyrate is also more commonly known as the ethyl butanoate with chemical formula of C₆H₁₂O₂. The equation of the butanoic acid (C₄H₈O₂) and ethanol (C₂H₆O) to form this substance can be written off as,
C₄H₈O₂ + C₂H₆O --> C₆H₁₂O₂ + H₂O
Note that the given equation is already balanced. Using dimensional analysis and conversion factors,
(8.5 g C₄H₈O₂)(1 mol/88.11 g)(1 mol C₆H₁₂O₂/1 mol C₄H₈O₂)(116.16 g / mol)
= 112.06 grams of ethyl butyrate
ANSWER: 112. 06 grams
For the reactants,
- The oxidation number of hydrogen = +1
- The oxidation number of oxygen = -2
- The oxidation number of arsenic = +5
- The oxidation number of carbon = +3
For the products,
- The oxidation number of hydrogen = +1
- The oxidation number of oxygen = -2
- The oxidation number of arsenic = +3
- The oxidation number of carbon = +4
Here, arsenic (+5 to +3) and carbon (+3 to +4) are the only oxidation numbers changing.
Note that an increase in oxidation number means electrons are lost. Thus oxidation is occurring, and a decrease in oxidation number means electrons are being gained, and thus reduction is occurring.
Also, the compound that contains the element being oxidized is the reducing agent, and the compound that contains the element being reduced is the oxidizing agent.
So, the answers are:
name of the element oxidized: Carbon
name of the element reduced: Arsenic
formula of the oxidizing agent:
formula of the reducing agent:
Peloponnese: The mountainous southern peninsula of Greece, connected to central Greece by the Isthmus of Corinth. Greek name Pelopónnisos.
The dissolution of CaCl2 in water has an equation written as:
CaCl2 = Ca2+ + 2Cl-
First, we need to calculate how many moles of Cl- we need from the volume and concentration to be used.
mol Cl- needed = 0.0520 mol / L Cl- (2.15 L) = 0.1118 mol Cl-
We can now find how much of the CaCl2 we need as follows:
0.1118 Cl- ( 1 mol CaCl2 / 2 mol Cl-) ( 111.1 g / 1 mol) = 6.21 g CaCl2