Igcse Model Questions Vol1 2023 Chemistry Question 32
Practice objective / multiple choice question 32 from the 2023 Igcse Model Questions Vol1 Chemistry examination.
An initially hollow steel pipe has an inner radius of 5.0 cm, an outer radius of 6.0 cm and a length of 2.00 m. It is exposed to seawater, and uniform corrosion reduces the outer radius at a constant rate of 0.05 mm per day. (i) How many days will elapse before the pipe wall is completely lost? (ii) Assuming the density of iron is 7.85 g cm^{-3}, calculate the mass of iron that has corroded by that time (in kilograms, to three significant figures). (iii) Using the reaction 4 Fe + 3 O_{2} \rightarrow 2 Fe_{2}O_{3}, determine the mass of Fe_{2}O_{3} formed (in kilograms, to three significant figures).
Answer Options
About This Question
This is Igcse Model Questions Vol1 2023 Chemistry Question 32. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.