Question

HBr + KHCO3 --> H2O + KBr + CO2 If I do this reaction with 30 grams of HBr, how many grams of carbon dioxide will be formed? MAKE SURE U USE FACTOR LABEL METHOD AND SHOW WORK!

Answer 1

Mass of carbon dioxide = 17.6 g

Step-by-step explanation:

Given data:

Mass of HBr = 30 g

Grams of carbon dioxide produced = ?

Solution:

Chemical equation:

HBr + KHCO₃ → H₂O + KBr + CO₂

Number of moles of HBr:

Number of moles = mass/ molar mass

Number of moles = 30 g/ 80.91 g/mol

Number of moles = 0.4 mol

Now we will compare the moles of HBr and CO₂.

HBr : CO₂

1 ; 1

0.4 : 0.4

Mass of carbon dioxide:

Mass = number of moles × molar mass

Mass = 0.4 mol × 44 g/mol

Mass = 17.6 g