Na2CO3(g) + 2HCl(aq) → 2NaCl(aq) + H2O(l) + CO2(g)
Na2CO3(g) + 2HCl(aq) → 2NaCl(aq) + H2O(l) + CO2(g)
How many moles of sodium trioxocarbonate (IV) are there in a 25 cm3 solution which required 10cm3 of 0.05 mol dm-3 hydrochloric acid solution to neutralize it?
1.000 mole
0.100 mole
0.010 mole
0.111 mole
Correct answer is C
CAVACBVB=ab
0.05×10CB×25=21
50CB = 0.5
CB = 0.550=1100
= 0.01
What takes place at the cathode during electrolysis? ...
What is the chemical symbol for Samarium? ...
The IUPAC nomenclature of the compound above is ...
The solubility of copper (II) tetraoxosulphate (Iv) is 75g in 100g of water at 100°C and 25g in ...
Carbon (ll) oxide may be collected as shown above because it...
The set-up above would be useful for determining the amount of ...
The volume occupied by 1.58g of a gas at S.T.P is 500cm3. What is the relative molecular m...
Which of the following properties increases down a group in the Periodic Table? ...
Which of the following compounds and elements would sublime on exposure to the atmosphere? ...