Answer:
165 of CO₂.
Explanation:
In the reaction:
Na2CO3 + 2HCl → 2NaCl + CO2 + H2O
2 moles of HCl reacts producing 1 mole o CO₂
If 7.5 moles of HCl reacts, moles of CO₂ produced are:
7.5 moles of HCl ₓ ( 1 mol CO₂ / 2 mol HCl) = 3.75 mol CO₂. As molar mass of CO₂ is 44g/mol, mass of CO₂ is:
3.75 mol CO₂ ₓ (44g / 1mol) = <em>165 of CO₂ </em>
Equation of the reaction
Given:
Number of moles of HCl, nA = 7.5 moles
By stoichiometry, 2 moles of HCl reacted fully to liberate 1 mole of CO2 gas.
Therefore, number of moles of CO2, ng = 7.5/2 × 1 moles
= 3.75 moles
Mass = molar mass × number of moles
Molar mass of CO2 = 12 + (16 × 2)
= 44 g/mol
Mass of CO2 = 44 × 3.75
= 165 g of CO2
C is the answer to your question
D
Molecules consist of multiple atoms put together to create a new form.
