In the ion, HAsO
4 2-, what is the oxidation number of arsenic?
When the half-reactions shown below are combined, what is true of the resulting REDOX reaction?
Zn ⇌ Zn
2+ + 2e -
Cu 2+ + 2e - ⇌ Cu
In the reaction between thiosulfate ions (S
2O 3 2-) and iodine, the sulfur species is converted to S 4O 6 2- and the iodine is converted to iodide ions. Which statement regarding the reaction is true?
In which of the following does the metal have the same oxidation state?
When manganate(VII) ions are reduced to Mn
2+ ions in acid solution, how many electrons are transferred?
When iron metal is added to a solution of copper(II) sulfate, which statement is true?
Which of the following reactions could be described as displacement?
In the following reaction, which species is acting as an acid in the REVERSE (right to left) reaction?
3 + H 2O ⇌ NH 4 + + OH -
How many moles of hydroxide ions are present, and on which side of the equation, when the half-reaction below is balanced in BASIC solution, using the smallest possible integers?
4 - → MnO 2
Which of the following reactions represents both an Acid-Base neutralization, AND a precipitation reaction?