Ответ:Mr(H2SO4) =2+32+4*16=98
Объяснение:
1.
CH3COONa+HCl= CH3COOH + NaCl
CH3COOH + C2H5OH = CH3COOC2H5 + H2O
CH3COOC2H5 + H2O = CH3COOH + C2H5OH
CH3COOH + NaOH = CH3COONa
2.
(1)2CH4--(t°=1500°C)--C2H2 + 3H2
(2)1)С2H2 + H2 = C2H4
2)C2H4 + HOH = C2H5OH
(3) 5C2H5OH + 4KMnO4 + 6H2SO4 = 5CH3-COOH + 4K2SO4+ 2MnSO4+11H2O
(4)CH3-COOH +Cl2=<span>CH2ClCOOH + HCl
</span>3. CH3-COOCH3 + H2O = CH3OH + CH3-COOH
CH3OH+[O] = CH3 - COH + H2O
CH3-COH+ 2Cu(OH)2 = CH3-COOH + 2CuOH + H2O
<span>дано:<span>
</span>m(CuO) = 4 г<span>
найти: </span>n(CuO)<span>
решение:
</span>M(CuO) = 64
+ 16 = 80 г\моль<span>
</span>n(CuO) = m\M = 4г\80 г\моль= 0,05 моль<span>
<span>ответ:0,05 моль</span></span></span>
Дано
n((K2O)=2 mol
--------------------
n(KOH)-?
K2O+H2O-->2KOH
n(K2O)=2n(KOH)
n(KOH)=2*2=4 mol
ответ 4 моль