Answer:
2.67 × 10⁻²
Explanation:
Equation for the reaction is expressed as:
CaCrO₄(s) ⇄ Ca₂⁺(aq) + CrO₂⁻⁴(aq)
Given that:
Kc=7.1×10⁻⁴
Kc= [tex][Ca^{2+}][CrO^{2-}_4][/tex]
Kc= [x][x]
Kc= [x²]
7.1×10⁻⁴ = [x²]
x = [tex]\sqrt{7.1*10^{-4}}[/tex]
x = 0.0267
x = [tex]2.67*10^{-2}[/tex]
