$$2Na(s)+2HCl(g)\rightarrow 2NaCl(s)+H_{2}\left ( g \right );\Delta H=-152 kcal$$
For the reaction $$2Na+Cl_{2}\rightarrow 2NaCl; \quad\Delta H=$$?
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Q4
3CaCl2+2Na3PO4⟶Ca3(PO4)2+2NaCl. This reaction is an example of_________.
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Q5
Sodium and chlorine react according to the following reaction: 2Na+Cl2→2NaCl. If the reaction starts with 5.0 moles of Na and 3.0 moles of Cl2 then which statement below is true?