4. Hydrogen gas is collected over water at 22.0â by reacting zinc with hydrochloric acid according to the following equation. Zn(s) + HCl(aq) â ZnCl2(aq) + H2(g) The total gas pressure is 756.9 torr. The vapor pressure of water at this temperature is 19.8 torr. Solve for the pressure, in units of kPa, of the pure hydrogen gas.
5. _____ All of the following are postulates of the Kinetic Molecular Theory except: ( which letter is the correct answer)
a. Gas molecules are small compared to the volume of the container, their volume is considered negligible.
b. Gas molecules do not have attractive or repulsive forces toward one another.
c. Gas molecules are in constant, straight line motion, and do not change direction until colliding with something.
4. Hydrogen gas is collected over water at 22.0â by reacting zinc with hydrochloric acid according to the following equation. Zn(s) + HCl(aq) â ZnCl2(aq) + H2(g) The total gas pressure is 756.9 torr. The vapor pressure of water at this temperature is 19.8 torr. Solve for the pressure, in units of kPa, of the pure hydrogen gas.
5. _____ All of the following are postulates of the Kinetic Molecular Theory except: ( which letter is the correct answer)
a. Gas molecules are small compared to the volume of the container, their volume is considered negligible.
b. Gas molecules do not have attractive or repulsive forces toward one another.
c. Gas molecules are in constant, straight line motion, and do not change direction until colliding with something.
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