Textbook Question
The arsenic in a 1.22-g sample of a pesticide was converted to AsO43- by suitable chemical treatment. It was then titrated using Ag+ to form Ag3AsO4 as a precipitate. (a) What is the oxidation state of As in AsO43-?
6. Chemical Quantities & Aqueous Reactions
Calculate Oxidation Numbers
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What is the oxidation state of nitrogen (N) in ammonia (NH3)?
A
+1
B
-3
C
+3
D
0
Verified step by step guidance1
Identify the chemical formula of ammonia, which is NH₃.
Recall that the sum of oxidation states in a neutral compound is zero.
Assign the oxidation state of hydrogen (H) as +1, since it is more electropositive than nitrogen.
Set up the equation for the sum of oxidation states: 3(+1) + x = 0, where x is the oxidation state of nitrogen.
Solve the equation for x to find the oxidation state of nitrogen in NH₃.
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