In: Chemistry
Balance the reaction between
H3AsO4 and
NO to form
H3AsO3 and
NO3- in acidic solution.
When you have balanced the equation using the smallest integers
possible, enter the coefficients of the species shown.
H3AsO4 + NO
= H3AsO3 +
NO3-
Water appears in the balanced equation as a (reactant,
product, neither) with a coefficient of ------. (Enter 0 for
neither.)
How many electrons are transferred in this reaction -------- ?
The unbalanced chemical equation is
The oxidation number of As decreases from +5 to +3. Total decrease in the oxidation number is 2.
The oxidation number of N increases from +2 to +5. Total increase in the oxidation number is +3.
Balance increase in the oxidation number with decrease in the oxidation number by multiplying As species with 3 and N species with 2.
Balance O atoms by adding water molecule to left hand side.
Balance H atoms by adding 2 protons to right hand side.
This is balanced chemical equation.
Water appears in the balanced equation as a reactant with a coefficient of 1.
Six many electrons are transferred in this reaction. The oxidation number of one As atom changes by 2. For 3 As atoms, the change in the oxidation number is 6. This corresponds to transfer of six electrons.