Hòa tan hoàn toàn100ml dung dịch HCl 2M vào V(L) dung dịch NaOH 1M thu được muối A a Tính V b Tính mA Giúp mình với ạ...Mình cảm ơn

2 câu trả lời

nHCl=0,2

HCl + NaOH -> NaCl + H2O

0,2 0 2 0,2

V=n/CM= 0,2/1=0,2(l)

m=0,2.58,5=11,7

Đáp án:

Giải thích các bước giải:

Pthh

$NaOH+HCl-->NaCl+H_2O$

$n_{NaOH}=V.1=V(mol)$

$n_{HCl}=0,1.2=0,2(mol)$

=> $n_{NaOH}=n_{HCl}<=>V=0,2$

Vậy V=0,2(l)

$n_{NaCl}= n_{HCl}=0,2(mol)$

=>$m_A=0,2.58,5=11,7(g)$

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