Coca-Cola has 2.2 grams of carbon dioxide gas, CO2 in each 335ml can. What is the molarity of CO2 in Coca-Cola?
a. 0.14 M
b. 0.0066 mol/L
c. 0.028 mol/L
d. 0.41 mol/L
Question
Question
Coca-Cola has 2.2 grams of carbon dioxide gas, CO2 in each 335ml can. What is the molarity of CO2 in Coca-Cola?
a. 0.14 M
b. 0.0066 mol/L
c. 0.028 mol/L
d. 0.41 mol/L
Answer:
a. 0.14 M
Explanation:
Molarity is the molar concentration of a solution and can be calculated using the formula below:
Molarity (mol/L) = number of moles (lol) ÷ volume (L)
To convert the mass of CO2 to moles, we use the formula: mole = mass/molar mass.
Molar mass of CO2 = 12 + 16(2)
= 12 + 32
= 44g/mol
mole = 2.2/44
mole = 0.05mol
Volume of can = 335mL = 335/1000 = 0.335L
Molarity = n/V
Molarity = 0.05/0.335
Molarity = 0.149
Molarity = 0.14 mol/L or M