Answer to Question #295129 in General Chemistry for Kabirzerkey

Question

A 38.63-mg sample of potassium ozonide, KO,, was heated to 70 °C for 1 h, undergoing a weight loss of 7.10 mg. Write a balanced chemical reaction describing this decomposition A 29.6-mg sample of impure KO, experiences a 4.86-mg weight loss when treated under similar condition. What is the w/w KO, in the sample?

Answer 1

38.63 mg KO3 70 C, 1 h, 7.10 mg loss 31.53 mg KO3 29.6 mg impure KO3 70 C, 1 h, 4.86 mg loss 24.74 mg KO3 2𝐾𝑂3 + 2𝐾𝑂2 + 𝑂2 % 𝑤 𝑤 𝐾𝑂3 = 38.62 𝑚𝑔 𝐾𝑂3 (7.10)(4.86) 29.6 𝑥100 = 89.3 %