Answer to Question #170635 in Chemistry for Dasola

Question

Calculate the mass of potassium trioxocarbonate(iv) in 250cm3 of 0.100moldm-3 solution.(K2CO3=138gmol-1)

Answer 1

С_M = n/V

n = C_M x V = 0.100 x 0.250 = 0.025 mol

n = m/M

m = n x M = 0.025 x 138 = 3.45 g