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KamalfromBaku
@KamalfromBaku
March 2022
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Помогите пожалуйста с заданиями. С 1 по 7. 50 балов
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Platinum15
Verified answer
1)
2FeSO4 + NaClO + 4NaOH + H2O = 2Fe(OH)3 + NaCl + 2Na2SO
4
сумма = 2+1=3
2) 2K2Cr2O7 + 8H2SO4 = 2Cr2(SO4)3 + 3O2 + 2K2SO4 + 8H2O
сумма= 2+8+2+3+2+8=25
3)
2CrCl3 + 10NaOH + 3NaClO = 2Na2CrO4 + 9NaCl + 5H2O
разность = 3-2=1
4)
4KMnO4 + 6H2SO4 = 2K2SO4 + 4MnSO4 + 5O2 + 6H2O
сумма=4+6+2+4+6=22
5)
8NaI + 5H2SO4 = 4Na2SO4 + H2S + 4I2 + 4H2O
сумма=5+1=6
6)
3Cu + 8HNO3 = 3Cu(NO3)2 + 2NO + 4H2O
разность=8-3=5
7)
4Ca + 5H2SO4 = 4CaSO4 + H2S + 4H2O
Сумма=5+1=6
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Answers & Comments
Verified answer
1) 2FeSO4 + NaClO + 4NaOH + H2O = 2Fe(OH)3 + NaCl + 2Na2SO4сумма = 2+1=3
2) 2K2Cr2O7 + 8H2SO4 = 2Cr2(SO4)3 + 3O2 + 2K2SO4 + 8H2O
сумма= 2+8+2+3+2+8=25
3)2CrCl3 + 10NaOH + 3NaClO = 2Na2CrO4 + 9NaCl + 5H2O
разность = 3-2=1
4) 4KMnO4 + 6H2SO4 = 2K2SO4 + 4MnSO4 + 5O2 + 6H2O
сумма=4+6+2+4+6=22
5) 8NaI + 5H2SO4 = 4Na2SO4 + H2S + 4I2 + 4H2O
сумма=5+1=6
6) 3Cu + 8HNO3 = 3Cu(NO3)2 + 2NO + 4H2O
разность=8-3=5
7) 4Ca + 5H2SO4 = 4CaSO4 + H2S + 4H2O
Сумма=5+1=6