Definitions
Atoms get oxidized or reduced because their protons transfer from one atom to another. True or False?
What is False?
*Redox occurs because of a transfer of electrons
Oxidation number of oxygen in O2(g)
What is 0?
Which atom got oxidized and which atom got reduced?
2Na + Cl2 = 2NaCl
What are Na was oxidized (0 to +1) while Cl was reduced (0 to -1)?
Classification of Reaction for 2Al + 6HCl = 2AlCl3 + 3H2
What is Single Displacement Reaction?
Define oxidation
When an atom loses electrons?
What is the oxidation number for every atom in this ionic compound?
KMnO4
What are K = +1; Mn = +7; O = -2
Which atom got oxidized and which atom got reduced?
KClO3 = KCl + O2
What are O gets oxidized (-2 to 0) while Cl gets reduced (+5 to -2)?
Classification of reaction for FeS + 2HBr = FeBr2 + H2S
What is Double Displacement Reaction?
*This is the only category of reactions in which neither oxidation nor reduction occurs
Define reduction
When an atom gains electrons?
Oxidation numbers for each atom in hydrogen peroxide - H2O2
What are Oxygen = -1 (remember this is the only exception as oxides have -2); Hydrogen = +1?
Which atom got oxidized and which atom got reduced?
Zn + CuCl2 = ZnCl2 + Cu
What are Zn gets oxidized (0 to +2) while Cu gets reduced (+2 to 0)
Classification of reaction for C3H8(g) + 5O2(g) = 3CO2(g) + 4H2O(l)
What is Complete Combustion Reaction?
A. Define oxidation number
B. Purpose of the oxidation number
A. What is the charge that we assign to every atom in a compound?
B. What is to figure out whether or not the atom has more or less electrons after the chemical reaction has occurred?
What is the oxidation number for each atom in hydroxide? OH-(aq)
What are Oxygen has an oxidation number of -2 and Hydrogen has an oxidation number of +1?
Is it a redox reaction?
NaHCO3 + CH3COOH = CH3COONa + CO2 + H2O
What is No?
*Both Na+ and H+ share oxidation numbers of +1. C and O also do not change oxidation numbers. As such neither oxidation nor reduction has occurred?
Which atom got oxidized and which atom got reduced?
CH4 + O2 = CO2 + H2O
What are C gets oxidized (-4 to +4) while O gets reduced (0 to -2)?
Classification of reaction for 2Al + 3Cl2 = 2AlCl3
What is Synthesis Reaction?
When a neutral atom has a loss of electrons, it is going to gain a positive charge. True or False?
What is true?
Oxidation numbers for each element in the following compound: C6H10O5 - Meglutol
Hint: for Carbon, Consider the Average Oxidation Number for Carbon, as Meglutol overall is a neutral organic compound. Each hydrogen has the same oxidation number and each oxygen has the same oxidation number.
What are C has an average oxidation number of 0, each H has an oxidation of +1, and each O has an oxidation number of -2?
https://www.chemicalaid.com/tools/oxidationnumber.php?compound=C6H10O5&hl=en
Is the following a redox reaction? KClO3 = KCl + O2
What is yes?
*Cl is reduced from +5 to -1; O is oxidized from -2 to 0
Which atom got oxidized and which atom got reduced?
H2O2 = H2O + O2
What is oxygen is being oxidized and reduced at the same time?
*1 O from hydrogen peroxide got oxidized (-1 to 0) while 1 O from hydrogen peroxide got reduced (0 to -2); H remains having an oxidation number of +1
Classification of reaction for 2HgO = 2Hg + O2
What is Decomposition Reaction?