Question

25.0 cm3 of 0.100 mol /dm3 aqueous sodium hydroxide is neutralised by 24.6 cm3 of dilute sulfuric acid.
What is the concentration of the dilute sulfuric acid?

Answer 1

Answer:

123432123454321`126765432123456

Explanation:

Answer 2

Answer:

0.0508

Explanation:

1dm3 = 1000cm3

so...

1000 cm3 = 0.1 moles

25 cm3 = x moles

x= 0.0025

2NaOH + H2SO4 → Na2SO4 + H2O

the ratio is therefore 2:1, therefore the moles in H2SO4 is 0.0025/2 =0.00125

to calculate concentration....

(0.00125/24.6) × 1000 = 0.0508 mole/dm3