INTERACTIVE EXAMPLE Using Dalton's Law of Partial Pressures II Hydrogen gas is produced by the reaction of hydrochloric acid, HCl, on zinc metal. 2HCl(aq) + Zn(s) → ZnCl₂(aq) + H₂(g) The gas is collected over water. If 152 mL of gas is collected at 19°C and 768 torr total pressure, what is the mass of hydrogen collected? The vapor pressure of water at 19°C is 16.5 torr. HOW DO WE GET THERE? You have the following data for the gas. Value 0.989 atm 0.152 L 292 K ? How many moles of H₂ are present? Variable P V T n n= Check Next (4 of 5) mol H₂

INTERACTIVE EXAMPLE Using Dalton's Law of Partial Pressures II Hydrogen gas is produced by the reaction of hydrochloric acid, HCl, on zinc metal. 2HCl(aq) + Zn(s) → ZnCl₂(aq) + H₂(g) The gas is collected over water. If 152 mL of gas is collected at 19°C and 768 torr total pressure, what is the mass of hydrogen collected? The vapor pressure of water at 19°C is 16.5 torr. HOW DO WE GET THERE? You have the following data for the gas. Value 0.989 atm 0.152 L 292 K ? How many moles of H₂ are present? Variable P V T n n= Check Next (4 of 5) mol H₂

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

Chapter5: Gases

Section: Chapter Questions

Problem 174IP

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