Answer to Question #255743 in General Chemistry for Emre

Question

By analysis, a compound was found to contain 26.58% K and 35.45% Cr by mass; the reminder was oxygen. What is the oxidation state of chromium in this compound? What is the name of this compound?

Answer 1

Let the oxidation state of Cr be x:

NB:-Net charge on a compound is zero. $\therefore$K_0x' +Cr_{0x '}+O_0x' =0

+1+x+(-2)=0

x=+2-1

x=+1

$\therefore$ Oxidation state of Cr is +1

The name of the compound is Potassium Chromate