a) \(n_{KOH}=0,1.1=0,1\left(mol\right)\)

PTHH: 2KOH + H₂SO₄ → K₂SO₄ + 2H₂O

Mol:      0,1          0,1            0,1

b) \(V_{ddH_2SO_4}=\dfrac{0,1}{0,5}=0,2\left(l\right)\)

c) \(C_{M_{ddK_2SO_4}}=\dfrac{0,1}{0,1+0,2}=0,333M\)

a) 2NaOH + H₂SO₄→ Na₂SO₄ + 2H₂O 

b) n_NaOH = C_MNaOH . V= 1. 0,1= 0,1mol

PTHH:

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

     2             1                 1             2

   0,1         0.05            0,05         0,1

V_H2SO4 =  =0,1l

c) V_{dd sau phản ứng}  = 0,1+0,1=0,2l

C_M =  = 0,25M

\(n_{KOH}=0.1\cdot1=0.1\left(mol\right)\)

\(n_{HCl}=0.1\cdot0.5=0.05\left(mol\right)\)

\(KOH+HCl\rightarrow KCl+H_2O\)

\(0.05.......0.05.......0.05\)

Dung dịch D : 0.05 (mol) KOH , 0.05 (mol) KCl

\(\left[K^+\right]=\dfrac{0.05+0.05}{0.1+0.1}=0.5\left(M\right)\)

\(\left[Cl^-\right]=\dfrac{0.05}{0.2}=0.25\left(M\right)\)

\(\left[OH^-\right]=\dfrac{0.05}{0.2}=0.25\left(M\right)\)

\(2KOH+H_2SO_4\rightarrow K_2SO_4+2H_2O\)

\(0.05.........0.025\)

\(V_{dd_{H_2SO_4}}=\dfrac{0.025}{1}=0.025\left(l\right)\)

\(n_{KOH}=0.1\cdot1=0.1\left(mol\right)\)

\(n_{H_2SO_4}=0.3\cdot0.5=0.15\left(mol\right)\)

\(2KOH+H_2SO_4\rightarrow K_2SO_4+H_2O\)

\(0.1..........0.05...............0.05\)

Dung dịch D : 0.05 (mol) K₂SO₄ , 0.1 (mol) H₂SO₄

\(\left[K^+\right]=\dfrac{0.05\cdot2}{0.1+0.3}=0.25\left(M\right)\)

\(\left[H^+\right]=\dfrac{0.1\cdot2}{0.1+0.3}=0.5\left(M\right)\)

\(\left[SO_4^{2-}\right]=\dfrac{0.05+0.1}{0.1+0.3}=0.375\left(M\right)\)

\(2NaOH+H_2SO_4\rightarrow K_2SO_4+H_2O\)

\(0.2..................0.1\)

\(V_{dd_{NaOH}}=\dfrac{0.2}{1}=0.2\left(l\right)\)

100ml = 0,1l

\(n_{H2SO4}=3.0,1=0,3\left(mol\right)\)

a) Pt : \(H_2SO_4+2KOH\rightarrow K_2SO_4+2H_2O|\)

                1             2                1              2

              0,3           0,6             0,3

b) \(n_{K2SO4}=\dfrac{0,3.1}{1}=0,3\left(mol\right)\)

⇒ \(m_{K2SO4}=0,3.174=52,2\left(g\right)\)

c) \(n_{KOH}=\dfrac{0,3.2}{1}=0,6\left(mol\right)\)

\(V_{ddKOH}=\dfrac{0,6}{2}=0,3\left(l\right)\)

d) \(V_{ddspu}=0,1+0,3=0,4\left(l\right)\)

\(C_{M_{K2SO4}}=\dfrac{0,3}{0,4}=0,75\left(M\right)\)

 Chúc bạn học tốt

\(a,PTHH:KOH+HCl\rightarrow KCl+H_2O\\ b,n_{KOH}=n_{HCl}=2\cdot0,1=0,2\left(mol\right)\\ \Rightarrow V_{dd_{HCl}}=\dfrac{0,2}{2}=0,1\left(l\right)\\ c,C_{M_{KCl}}=\dfrac{0,2}{0,1+0,1}=1M\)

Đổi 100ml = 0,1 lít

Ta có: \(n_{KOH}=2.0,1=0,2\left(mol\right)\)

a. PTHH: \(KOH+HCl--->KCl+H_2O\)

b. Theo PT: \(n_{HCl}=n_{KOH}=0,2\left(mol\right)\)

\(\Rightarrow V_{dd_{HCl}}=\dfrac{0,2}{2}=0,1\left(lít\right)=100\left(ml\right)\)

c. Ta có: \(V_{dd_{KCl}}=V_{dd_{HCl}}=0,1\left(lít\right)\)

Theo PT: \(n_{KCl}=n_{HCl}=0,2\left(mol\right)\)

\(\Rightarrow C_{M_{KCl}}=\dfrac{0,2}{0,1}=2M\)

[K+]=[Cl-]=0,25M

[KOH dư]=0,25M

b)   2KCl   +    H₂SO₄    ----------->K₂SO₄   + 2HCl

  0,05(mol)---->0,025(mol)

=>v_H2SO4=\(\frac{0,025}{1}\)=0,025(lít)

c)pH=-log(0,25)=0,602

(câu c mình không chắc chắn lắm nha bạn!!!)

câu a) làm sao vậy mn chỉ mik vs