Question

1.45 grams of sodium bicarbonate reacts with excess hydrochloric acid at 15.5 degrees C and a pressure of 99.2 kPa to make carbon dioxide, water, and sodium chloride.
a. Write the balanced equation
b. Determine the number of moles of sodium bicarbonate
c. Using the balanced equation, convert moles of sodium bicarbonate to moles of carbon dioxide
d. Using the ideal gas law, determine the volume carbon dioxide occupies

Answer 1

a) HCO3Na (s)+ HCl(aq) -> H2CO3(aq) + NaCl(aq) -> CO2(g) + H2O(l)+ NaCl(aq)

b) n= mass/molecular mass 1.45g/molecular mass of sodium bicarbonate

c) 0ne to one moles of sodium bicarbonate/moles of carbon dioxide

d) P x V = n R T
V = n R T/P
n = calculated in a)
T= temperature in Kelvins= 15.5C+273.15
R= 0.082 atm L/mol K
P= 99.2kPa convert this value in atm (1 atm= 101.325kPa)