Lab 9 Ideal Gas Law
What is the value of the gas constant, R, in units of L⋅atmmol⋅K ? Report the value with at least three significant figures.
0.0821 The gas constant R is used in many calculations in chemistry. Be sure to use the value for R with the correct units for each equation.
How many moles of H2 can be formed if a 3.03 g sample of Mg reacts with excess HCl ?
0.125
The temperature of a room is 22.3 °C. What is this temperature expressed in Kelvin (K)? Type answer:
295.5
The H2 produced in a chemical reaction is collected through water in a eudiometer. If the pressure in the eudiometer is 760.0 torr and the vapor pressure of water under the experimental conditions is 21.4 torr, what is the pressure (torr) of the H2 gas?
738.6
A balloon is inflated outside on a cool morning. As the temperature rises, reaching its peak in the afternoon, the volume of the balloon will check_circle_outline. As the temperature cools down again in the evening, the volume of the balloon will
A balloon is inflated outside on a cool morning. As the temperature rises, reaching its peak in the afternoon, the volume of the balloon will increase. As the temperature cools down again in the evening, the volume of the balloon will decrease.
Suppose 0.0350 g Mg is reacted with 10.00 mL of 6 M HCl to produce aqueous magnesium chloride and hydrogen gas. Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g) What is the limiting reactant in this reaction?
Magnesium metal
Suppose an air bubble is trapped in the eudiometer before starting the experiment. After the experiment is finished, the resulting value of R would be
Suppose an air bubble is trapped in the eudiometer before starting the experiment. After the experiment is finished, the resulting value of R would be too large.
The relationship between pressure and volume of a gas is check_circle_outline so that as volume decreases, pressure
The relationship between pressure and volume of a gas is inverse so that as volume decreases, pressure increases.
In the Ideal Gas Law lab, how is the temperature of the hydrogen gas determined?
The temperature of the water bath is measured after the reaction, which is assumed to be the same temperature as the gas.