C. MnO₄ + 4C₂H₂O₄ → Mn + 8CO₂ + 4H₂O
I'm not exactly sure which one but I do know that an acid and a base react in a aqueous solution to form water, so i would probably eliminate the ones that aren't aqueous solutions.
That is called an unsaturated solution
Answer:
Mass of NaOH required= 60 g
Explanation:
Given data:
Mass of NaHCO₃ = 126 g
Mass of NaOH required = ?
Solution:
Chemical equation:
NaOH + CO₂ → NaHCO₃
Number of moles of NaHCO₃:
Number of moles = mass/ molar mass
Number of moles = 126 g/ 84 g/mol
Number of moles = 1.5 mol
Now we will compare the moles of NaHCO₃ and NaOH.
NaHCO₃ : NaOH
1 : 1
1.5 : 1.5
Mass of sodium hydroxide:
Mass = number of moles × molar mass
Mass = 1.5 mol × 40 g/mol
Mass = 60 g
