They are identified in the cavity bb U.S. Pat. 4.512.577and 4.621.813
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Identify the property illustrated 7 + 9 = 9 =7
Fe 2+ is Ferrous Fe 3+ is Ferric
Zn(s) → Zn2+(aq) + 2e- and Fe3+(aq) + e- → Fe2+(aq)
In the estimation of iron(II) by permanganometry, the Mn2+ ion acts as an indicator. The Mn2+ ion itself is colorless in solution. During the titration process, the Mn2+ ion is oxidized to Mn4+ by the iron(II) ion, resulting in a color change from pale pink to colorless. This color change is used to determine the endpoint of the titration.
The expression "15 plus the quotient of 60 and w" can be written as 15 + 60/w. To simplify this expression, we need to divide 60 by w first, then add the result to 15. The final simplified expression is 15 + 60/w.