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Stomach acid a dilute solution of HCI ca...

Stomach acid a dilute solution of HCI can be neutralised by reaction with Aluminium hydroxide.
` Al(OH)_3 +3HCl(aq) to AlCl_3 +3H_2O `
how many millitres of 0.1 M ` Al(OH)_3 ` solution are needed to neutralise 21 ml of ` 0.1` M HCl?

A

14 mL

B

7 mL

C

21 mL

D

none of these

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The correct Answer is:
B
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