Предмет: Химия, автор: Nastya56780

Найти объем жидкого стирола, который обесцвечивает 150 г 3,2% бромной воды. Если плотность стирола 0,91г/мл.

Полное решение, пожалуйста.

Ответы

Автор ответа: rkoyash
0
Стирол-ароматический углеводород с молекулярной формулой C8H8

Реакция:
Обесцвечивание бромной воды 
C6H5-CH=CH2+Br2(р-р) -->C6H5-CHBr-CH2Br

m(Br2)=150г×0.032м.д.=4.8г
n(Br2)=n(C8H8)=4.8/160=0.03моль
m(C8H8)=n×M=0.03моль×104г/моль=3.12г
V(C8H8)=m/p=3.12/0.91=3.43мл

ОТВЕТ: V=3.43мл
Похожие вопросы
Предмет: Английский язык, автор: vika1334546cb
Предмет: Английский язык, автор: keyfor2020
1.You will______ the prices on the invoice.
a. look
b. see
c. watch
2.If you have option, do you have____ ?
a. a choice
b. a contract
c. a bill of sale
3.If you_______ an error in reviewing the proposal, please bring it to
your manager's attention.
a. get in
b. come across
c. come on
4.Safe driving prevents_______ and the awful_____ of knowing you
have caused others pain.
a. tragedy - remorse
b. accidents – safe
c. disease - reminder
5.The foreign - exchange market is based_______ the economic law of
supply and demand.
a. of
b. on
c. at
6.Exchange risk is a very real_____ for financial managers.
a. concern
b. conception
c. concept
7.Their_________was rewarded.
a. persistent
b. persist
c. persistence
8.Transportation officials have recommended____ fares.
a. to raise
b. to revise
c. to rise
9.A higher average______ rate accounted for one third of the financing
costs.
a. interest
b. interesting
c. interested
10.A subsidiary has entered ____ a partnership arrangement with
another company.
a. into
b. to
c. in
11.Trade is only one of many factors that cause____ change.
a. economical
b. economics
c. economic
12.Hard currency is backed by gold_____ .
a. research
b. reserves
c. reservation
13.Taxes have a very important impact _ _ foreign direct investment
decisions.
a. on
b. for
c. at
14.Licensing is______ to direct investment.
a. alteration
b. alternate
c. an alternative
15.The USA and Canada will become a common__________ where goods
will flow between the borders duty free.
a. shop
b. foreign exchange
c. market
Предмет: Физика, автор: Олэнь