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July 23, 2014

Homework Help: Chemistry-please help

Posted by candy on Monday, January 26, 2009 at 4:11am.

1) Metals that are above hydrogen in the reactivity series react with dilute hydrochloric acid to produce hydrogen gas. Lead is just above hydrogen in the reactivity series.I read a book that says no reaction occurs between lead & dilute acid. Why? Is it because the reaction is too slow?

2) Magnesium + Iron (II) Chloride gives Magnesium chloride + iron. What colour is the iron solid? Black?

3)When reacting a metal with steam, the delivery tube must be removed from the water in the trough before turning off the Bunsen flame. This is to prevent water from being sucked back into the hot test tube. Why will water be sucked back into the hot test tube?

Thank you!

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