A measuring cylinder fitted with moist steel wool was inverted in a trough of water as shown in the diagram below.

      

A measuring cylinder fitted with moist steel wool was inverted in a trough of water as shown in the diagram below.
measuringclinder4620174420001.jpg
a) State and explain the observations made on the:
i) Moist steel wool after four days
ii) Water level in the measuring cylinder after four days.
b) What would be the effect of using steel wool moistened with salty water?

  

Answers


John
a) i) Moist steel wool turns brown. In the presence of air and moisture, steel wool reacts to form rust
which is brown in colour

ii) The level of water raises. This is to occupy the space left by the part of air used during rusting

b) Rusting would occur faster since salinity accelerates rusting.

johnmulu answered the question on April 6, 2017 at 13:45


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