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OpenStudy (anonymous):
what happens when Zn and 2HCl reacts? know you get ZnCl2 + H2, but what happens during the reaction? :)
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OpenStudy (anonymous):
If you put some zinc into a test tube containing the acid, bubbles of hydrogen gas form and the test tube gets warmer as heat is given off by the reaction. The zinc metal appears to become less shiny.
OpenStudy (anonymous):
:) thanks
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Use Hvap of water = 40.7 kJ/mol, c of water = 4.184 J/g.u00b0C, and molar mass of HO = 18.
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