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zingchristina
24.06.2019 •
Chemistry
In the reaction h2co3 (aq) + 2nh3 (aq) = 2nh4^+ (aq) + co3 2- (aq), how many electrons are transferred? a. 1 b. 2 c. 3 d. 4 e. none of the above (this is not a redox reaction)
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Ответ:
The electrons are transferred when the reaction is redox reaction. It means that there must be reduction and oxidation.
The given equation is
The oxidation number of each element remains the same before and after the reaction.
H = +1
C: +4
O: -2
N: -3
Thus this is simple acid base reaction and not redox
There is transfer of proton from bicarbonate to ammonia
this is not a redox reaction
Ответ:
See explanation
Explanation:
The balanced equation for the formation of sulphuric acid is;
2SO2 + O2 + 2H2O → 2H2SO4
If 1 mole of SO2 occupies 22.4 L
x moles occupy 67.2 L
x = 1 × 67.2/22.4
x= 3 moles
From the reaction equation;
2 moles of SO2 yields 2 moles of H2SO4
Hence 3 moles of SO2 also yields 3 moles of H2SO4
Theoretical yield of H2SO4 = 3 moles × 98 g/mol = 294 g
Percent yield = actual yield/theoretical yield × 100
Percent yield = 250g/294g × 100
Percent yield = 85%