ai giup minh giai hoa PH vs?

tron 250ml dung dich chua HCl 1M va H2S04 0.5M va 250ml dung dich NaOH 1,8M thu duoc dung dich C. Tinh PH dung dich C?

giai ho minh bai do vs, ban viet the minh k hieu minh k biet lam dau

nHCl=0,25.1=0,25mol
nH2SO4=0,25.0,5=0,125mol
=>nH+=0,25+0,125.2=0,5mol
nNaOH=0,25.1,8=0,45mol
=>nOH-=0,45 mol
PT: H(+)+OH(-)-->H2O
0,5---0,45
=>nH(+) dư=0,5-0,45=0,05mol
=>[H+]=0.05/(0.25+0.25)=0.1
=>pH=1.