An inorganic compound contained 24.75% (w/w)potassium and 34.75% (w/w)

1.	An inorganic compound contained 24.75% (w/w)potassium and 34.75% (w/w) manganeseand some other common element. Give theempirical formula of the compound (K 39uMn 59u)
Answer» let the mass of the compound be 100gm % mass of potassium is 24.75% =24.75gmand % mass of manganese is 34.75% = 34.75gm moles of potassium = 24.75/39 = 0.634and moles of manganese = 34.75/59 = 0.588 => ratio of K/Mn = 0.634/0.588 = 1.07≈1 so, emperical formula of compound is = (K)1(Mn)1

An inorganic compound contained 24.75% (w/w)potassium and 34.75% (w/w) manganeseand some other common element. Give theempirical formula of the compound (K 39uMn 59u)

Answer»

let the mass of the compound be 100gm

% mass of potassium is 24.75% =24.75gmand % mass of manganese is 34.75% = 34.75gm

moles of potassium = 24.75/39 = 0.634and moles of manganese = 34.75/59 = 0.588 => ratio of K/Mn = 0.634/0.588 = 1.07≈1

so, emperical formula of compound is = (K)1(Mn)1