139. Solving a chemistry problem
17. The coagulation threshold of As2S3 hydrosol under the influence of KCl is 4.9 * 10 ^ -2 mol / l. Taking into account that the particles have a negative charge, calculate the coagulation thresholds caused by electrolytes according to the Schultz-Hardy rule: K2SO4; MgCl2; AlCl3; MgSO4; Al2 (SO4) 3.
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