MEDAL AND FAN, PLEASE EXPLAIN ENTIRE WALKTHROUGH!

1. Lead will react with hydrochloric acid to produce lead (ii) chloride and hydrogen. How many moles of hydrochloric acid are needed to completely react with 0.36 mol of lead?

Question

MEDAL AND FAN, PLEASE EXPLAIN ENTIRE WALKTHROUGH!

1. Lead will react with hydrochloric acid to produce lead (ii) chloride and hydrogen. How many moles of hydrochloric acid are needed to completely react with 0.36 mol of lead?

xguardians · Answer

@SolomonZelman , @mathstudent55 , @aaronq , @radar

xguardians · Answer

@ganeshie8 , @Nurali Someone please help me?

rishavraj · Answer

0.72 moles

xguardians · Answer

Can you please explain how you got that, (preferably the setup_ @rishavraj

rishavraj · Answer

[Pb + 2HCl \rightarrow PbCl _{2} + H _{2}\]

rishavraj · Answer

was that enough..

xguardians · Answer

Thanks, yeah I figured it out on my own. But your answer helped me confirm that I was right!

rishavraj · Answer

anytime....

aaronq · Answer

I know the question is answered, but i want to clarify you arrive at that.

you wanna use a ratio of the moles and stoichiometric coefficients of the reactants:
 
   $\dfrac{n_{HCl}}{2}=\dfrac{n_{Pb}}{1}\rightarrow n_{HCl}=\dfrac{2*n_{Pb}}{1}$             (recall n = moles)

This confirms that you need twice as many moles to completely react.