Предмет: Химия, автор: ANASTASIASALYN

какая масса соли образуется в результате взаимодействия 100 г 10% серной кислоты с 200 г 10 % гидроксидом калия. какова массовая доля соли в полученном растворе?

Ответы

Автор ответа: Almira289
0
H2SO4+2KOH=K2SO4 + 2H2O
m(H2SO4) = 10 г
n(H2SO4) = 0.1 моль (недостаток)
m(KOH) = 20 г 
n (KOH) = 0.36 моль (избыток)
n(K2SO4) = 0.1 моль
m(K2SO4) = 17.4 г
Автор ответа: ANASTASIASALYN
0
спасибо))
Похожие вопросы
Предмет: Английский язык, автор: zheniskyzysabinaturs
I Love Coffee! There’s a supermarket in my neighborhood called Tom’sSupermarket, and I go shopping there (1) _____________.They have lots of fresh fruits and vegetables, and I love the coffee they sell. It’s called ‘Tom’s Brazilian Coffee’ and it(2) _____________s really great! I always get up early, so I(3) _____________ have a cup of it before I go to work. It helps me to wake up. I like to add a little (4) _____________and some milk to my coffee, so it doesn’t taste too(5) ____________. Not always, just (6) ____________, Ihave a second cup at work. One of my friends likes to drink three or four cups of coffee every day, but not me! I(7) _____________ have more than two cups. If I drink morethan two cups of coffee in one day, I can’t get to sleep atnight because there is caffeine in drinks like coffee and(8) _____________. I love coffee, so you probably think thatit's my favorite drink … but, you’re wrong! Every night, justbefore I go to bed, I always have a nice, warm glass of(9) _____________. It’s very (10) _____________ and it helps me to fall asleep. How about you? Is milk your favoritedrink … or do you hate it? What’s your favorite drink? And what’s your favorite food?
every week ,taste, tea, always, sometimes ,never , healthy, sugar ,bitter ,milk ,

gap 1 *
every week
taste
always
gap 2 *
bitter
sometimes
taste
gap 3 *
never
always
milk
gap 4 *
sugar
bitter
sometimes
gap 5 *
never
bitter
sometimes
gap 6 *
sometimes
never
tea
gap 7 *
sometimes
never
always
gap 8 *
ever
never
tea
gap 9 *
tea
milk
always
gap 10 *
tea
healthy
taste​