Question

将25mL某浓度的盐酸与24mL某浓度的NaOH溶液充分反应,恰好完全中和.

Answer 1

1).0.025Ca=0.024Cb

2).Caco3----- 2HCl

0.0095 2*0.0095

NaOH--------HCl

0.0074*Cb 0.0074*Cb

0.0074Cb+2*0.0095=0.025Ca

联系1）得

74Cb+190=240Cb

Cb=1.14mol/L

Ca=24Cb/25=1.10mol/L