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
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