Chemistry: How many gallons of soft drink are there in a 2.0l bottle

0.005404 MExplanation:Since you added an excess of sodium carbonate you warrantied that all the in the sample reacted with it. So we can say that the insoluble lead (II) carbonate contains all the ions in the original sample. The moles of are: One mol of is required to form one mol of . So, the stoichiometric relationship between them is 1:1. Knowing this, 0.00054 is also the number of moles of in the original sample. So, the concentration of in the original sample is:...

How many gallons of soft drink are there in a

Ответ:

hartzpeyton136

28.12.2022

Chemistry

0.005404 M

Explanation:

$Pb^{2+}(aq) + Na_{2}CO_{3}(aq) --- PbCO_{3}(s) + 2Na^{+}(aq)$

Since you added an excess of sodium carbonate you warrantied that all the $Pb^{+2}$ in the sample reacted with it. So we can say that the insoluble lead (II) carbonate $PbCO_{3}$ contains all the $Pb^{+2}$ ions in the original sample.

The moles of $PbCO_{3}$ are:

$moles-of-PbCO_{3}=\frac{mass-of-PbCO_{3}}{Molecular-weight-of- PbCO_{3}}=\frac{0.1443g}{267\frac{g}{mol}}=0.00054 mol$

One mol of $Pb^{+2}$ is required to form one mol of $PbCO_{3}$ . So, the stoichiometric relationship between them is 1:1.

$Pb^{+2} +CO_{3}^{-2} - - - PbCO_{3}$

Knowing this, 0.00054 is also the number of moles of $Pb^{+2}$ in the original sample.

So, the concentration of $Pb^{+2}$ in the original sample is:

$M = \frac{mol-of-Pb^{+2}}{volume-wastewater-(liters)}=\frac{0.00054}{0.1L}=0.005404 M$

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How many gallons of soft drink are there in a 2.0l bottle

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