Background:Many metals react with hydrochloric acid to produce hydrogen gas and metal ions.In this Lab you will use Magnesium: Mg(s) + 2 H+(aq) → H2(g) + Mg2+(aq) The moles of hydrogen gas produced can be determined using the Ideal Gas equation,PV = nRT. Useful InformationPressure of water vapor at 18.8 °C = 16.3 torr P(gases in buret) = P(hydrogen gas) + P(water vapor) PV= nRT where P is in atm, V is in L, and T is in K TK = Tºc + 273 l.0 atm = 760 tor R = 0.082 L atm /K mol Data Volume of water added to the 50 mL buret that has uncalibrated bottom1.0 mL Buret reading after addition of 1.00 mL water 49.50 mLMass of metal sample 0.038 gTemperature of water (and thus temperature of gases). 18.8 °CBuret reading of gases 36.9 mLBarometric pressure 760 torr QUESTION What is the partial pressure of water vapor at 18.8 °C? (1 decimal place) What is the partial pressure of hydrogen gas in torr? ( 3 sig figs) What is the partial pressure of hydrogen gas produced, in atm?(3 decimal places)

Given: Temperature = 18.8 oC Barometric pressure = 760 torr

Answered: Many metals react with hydrochloric…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Background:

Many metals react with hydrochloric acid to produce hydrogen gas and metal ions.

In this Lab you will use Magnesium:

Mg_(s) + 2 H⁺_(aq) → H_2(g) + Mg²⁺_(aq)

The moles of hydrogen gas produced can be determined using the Ideal Gas equation,

PV = nRT.

Useful Information

Pressure of water vapor at 18.8 °C = 16.3 torr

P(gases in buret) = P(hydrogen gas) + P(water vapor)

PV= nRT where P is in atm, V is in L, and T is in K

T_K =T^ºc + 273

l.0 atm = 760 tor

R = 0.082 L atm /K mol

Data
Volume of water added to the 50 mL buret that has uncalibrated bottom	1.0 mL
Buret reading after addition of 1.00 mL water	49.50 mL
Mass of metal sample	0.038 g
Temperature of water (and thus temperature of gases).	18.8 °C
Buret reading of gases	36.9 mL
Barometric pressure	760 torr

QUESTION

What is the partial pressure of water vapor at 18.8 °C? (1 decimal place)

What is the partial pressure of hydrogen gas in torr? ( 3 sig figs)

What is the partial pressure of hydrogen gas produced, in atm?(3 decimal places)

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