Synthesis Reactions-- CHEMISTRY

Test Preparation AP Sciences
1

<p>How do you know which form of an ion to use?</p>

<p>for example, a question says ‘mercury and bromine react in a synthesis reaction’</p>

<p>so the left side of the reaction is “Hg + Br2-----> ___________”</p>

<p>How do i know whether i should use Mercury(I) or Mercury(II)? Shouldn’t it specify or is there some rule of thumb i’m missing?</p>

2

<p>For AP Chemistry, in general, I don’t think it matters which form of any cation you use as long as you use it correctly (and you balance the equation, of course).</p>

3

<p>When in doubt, use the most common cation (Hg II).</p>