1.Which one of the following species cannot act as a base?
Select one:
a. H2O
b. Cl–
c. NH4+
d. OH–
e. NH3
2.
A gas with an empirical formula NO2 is weighed in a 1L flask and found to have a mass of 4.0 g. What is its molecularformula? (1 mol of an ideal gas occupies 23.0 L under theconditions of this experiment).
Select one:
a. N2O4
b. N4O8
c. NO
d. NO2
e. N2O
3.
When calcium hydroxide is reacted with excess nitric acid, itproduces:
Select one:
a. a solution of Ca2+(aq)and OH–(aq) ions
b. calcium nitrate solution
c. carbon dioxide gas
d. a basic solution
e. hydrogen gas
4.
A dilute aqueous acid was reacted with a white solid to producea gas. This gas makes limewater turn cloudy and white. Which of thefollowing could be the identity of the white solid?
Select one:
a. NaOH
b. NaHSO3
c. NaCl
d. NaNO3
e. NaHCO3
5.
When magnesium is reacted with hydrochloric acid, itproduces:
Select one:
a. a spark
b. a basic solution
c. carbon dioxide gas
d. a solution containing Mg2+ (aq) and Cl–(aq) ions
e. chlorine gas
