16.8 g of sodium hydrogen trioxocarbonate (IV) is complet...
16.8 g of sodium hydrogen trioxocarbonate (IV) is completely decomposed by heat. Calculate the volume of carbon(IV) oxide given off at s.t.p
[Na 23, C = 12, O = 16, H = 1, Molar volume of a gas at s.t.p = 22.4 dm3]
22.40 dm3
11.20 dm3
2.24 dm3
1.12 dm3
Correct answer is C
2NaHCO3(s) → Na2CO3(s) + H2O(l) + CO2
Relative molecular mass of NaHCO3 = 23 +1 + 12 + 16 * 3 = 84gmol-1
2 * 84g of NaHCO3 will be liberated 22.4dm3 or CO2 at s.t.p
16.8g of NaHCO3 will liberate (16.8 * 22.4)/(2 * 84) = 2.24 dm3
When acidified KMnO4 solution is decolorised by ethene, the gas acts as...
The collision theory explains reaction rates in terms of ...
What is the atomic number of Plutonium? ...
23592U+10n→14556Ba+8836Kr+310n+Energy The equation above ...
What is the atomic number of Strontium? ...
Which of the following is an ore of aluminium? ...