Предмет: Химия, автор: eugenesk4

Через розчин калій гідроксиду масою 102г з масовою часткою розчиненої речовини 0.1 пропустили карбон 4 оксид. Яка маса та кількість речовини калій карбонату утворилась?

Ответы

Автор ответа: frgfrg

запишем уравнение 2KOH+CO2=K2CO3 рассчитаем сколько КОН в растворе х= 102*0,1:100=0,102 грамма решаем по уравнению Молярная масса КОН=39+16 +1=56 г масса 2молей=112г молярная массаК2СО3= 78+12+48=138 составим пропорцию 112 относится к 138 как 0,102 относится к х Х= 0,102*138:112=0,12граммов

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