If a solution contains 4.9g of tetraoxosulphate (VI) acid...
If a solution contains 4.9g of tetraoxosulphate (VI) acid, calculate the amount of copper (II) oxide that will react with it
[Cu = 64, O = 16, S = 32, H = 1]
0.8g
4.0g
40.0g
80.0g
Correct answer is B
Equation of the reaction
H2SO4(g) + CuO(s) → Cu4(aq) + H2O
Relative molecular mass of H2SO4 = 1 + 2 + 32 + 16 + 4 = 98
Relative molecular mass of CuO = 64 + 16 =80
From the above equation, 98s of H2SO4 reacts with 80s of CuO.
∴ 4.9g of H2SO4 will react with
= (4.9 * 80)/98 of CuO = 392/98 = 4.0g
Copper (II) tetraoxosulphate (IV) is widely used as a? ...
An acid present in proteins is...
If the cost of electricity required to discharge 10g of an ion X3+ is N20.00, how much would ...
2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g) From the equation above, calculate the mass of sodium hyd...
Methylethanoate reacts with ammonia to yield? ...
The molecules of which gas have the highest speed? ...
Environmental pollution is worsened by the release from automobile exhausts of? ...