Na2CO3 g 2HCl aq 2NaCl aq H2O l CO2 g How many ... - JAMB Chemistry 2006 Question
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?
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?
A
1.000 mole
B
0.100 mole
C
0.010 mole`
D
0.111 mole
correct option: c
(\frac{C_A V_A}{C_BV_B} = \frac{a}{b})
(\frac{0.05 \times 10}{C_B \times 25} = \frac{2}{1})
50CB = 0.5
CB = (\frac{0.5}{50} = \frac{5}{100})
= 0.01
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