Question

Standardization of HCI Trial II III mass Na2CO3 (g) volume HCI (mL) molarity HCI (M) 0.1074 0.0971 0.0972 8.90 8.55 8.45 Average HCl molarity (M) Correct # of Sig Figs (enter 1 or 2 or 3 or 4 etc.) for Average HCI molarity mass % Na2CO3 in unknown 3 Trial mass unknown (g) volume HCl (mL) 0.2721 II 0.2940 8.25 8.80 III 0.2816 8.45 moles HCI moles Na2CO3 mass Na2CO3 (g)

          Standardization of HCI
Trial
II
III
mass Na2CO3 (g)
volume HCI (mL)
molarity HCI (M)
0.1074
0.0971
0.0972
8.90
8.55
8.45
Average HCl molarity (M)
Correct # of Sig Figs (enter 1
or 2 or 3 or 4 etc.) for Average
HCI molarity
mass % Na2CO3 in unknown
3
Trial
mass unknown (g)
volume HCl (mL)
0.2721
II
0.2940
8.25
8.80
III
0.2816
8.45
moles HCI
moles Na2CO3
mass Na2CO3 (g)

Standardization of HCI
Trial
II
III
mass Na2CO3 (g)
volume HCI (mL)
molarity HCI (M)
0.1074
0.0971
0.0972
8.90
8.55
8.45
Average HCl molarity (M)
Correct # of Sig Figs (enter 1
or 2 or 3 or 4 etc.) for Average
HCI molarity
mass % Na2CO3 in unknown
3
Trial
mass unknown (g)
volume HCl (mL)
0.2721
II
0.2940
8.25
8.80
III
0.2816
8.45
moles HCI
moles Na2CO3
mass Na2CO3 (g)

Added by Sarah S.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Riaz Ahmad

Step 1

To calculate the molarity of HCl, you need to use the formula: Molarity (M) = moles of solute / volume of solution (in liters) In this case, the volume of HCl is given in milliliters, so you need to convert it to liters by dividing by 1000. Show more…

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How do I calculate the molarity of HCl? How do I calculate the moles of HCl and the moles and mass of Na2CO3? Standardization of HCl: Trial mass Na2CO3 (g) volume HCl (mL) molarity HCl (M) Average HCl molarity (M) Correct # of Sig Figs (enter 1 or 2 or 3 or 4 etc:) for Average HCl molarity 0.1074 0.0971 8.55 0.0972 8.45 8.90 Mass % Na2CO3 in unknown: Trial mass unknown (g) volume HCl (mL) moles HCl moles Na2CO3 mass Na2CO3 (g) 0.2721 8.25 0.2940 8.80 0.2816 8.45