2 K⁺Mn⁺⁷O4⁻² + 10 K⁺I⁻ + 8 H2⁺S⁺⁶O4⁻² = 2 Mn⁺²S⁺⁶O4⁻² + 6 K2⁺S⁺⁶O4⁻² + 8 H2⁺O⁻² + 5 I<span>2</span>°<span>
</span>Мn⁺⁷ + 5е= <span>Мn</span>⁺²<span> 5l10l2(ок-к)
</span><span>2I</span>⁻¹ <span> -2*1е= I</span>₂°<span> 2l l5(від-к)
</span>
В кислотах, в горючих веществах, в процессах горения.
Масса соли=20*5/100=1г
<span>масса воды=20-1=19г
</span>
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