subject
Chemistry, 27.08.2020 02:01 lovenahofer

Considere dois tubos de ensaio, cada um contendo diferentes solventes: tubo A - água (H2O) e tubo B - dissulfeto de carbono (CS2). Como são ambos incolores e suas massas são iguais, a diferença visual entre eles está no volume ocupado por cada um, sendo o volume maior no tubo A. Os seguintes experimentos (descritos nos itens a, b, c), totalmente independentes e isolados, poderiam ter sido realizados com estes tubos. Responda o que se pede, com EXPLICAÇÕES COMPLETAS. a) Imagine que em cada tubo seja adicionada a mesma massa de cristais de iodo - I2 - (de coloração roxa). Após agitação, o que deveríamos observar em relação ao sistema final no tubo A e no tubo B? b) Se o experimento descrito no item a fosse realizado com cristais de permanganato de potássio (KMnO4 - de coloração roxa), quais seriam as diferenças observadas? c) Se o conteúdo do tubo A fosse colocado no tubo B, seriam formadas quantas fases? Identifique-as (fase superior/ inferior) e explique seu raciocínio.

ansver
Answers: 3

Other questions on the subject: Chemistry

image
Chemistry, 21.06.2019 22:20, andybiersack154
Asolution is made by dissolving 25.5 grams of glucose (c6h12o6) in 398 grams of water. what is the freezing point depression of the solvent if the freezing point constant is -1.86 °c/m? show all of the work needed to solve this problem.
Answers: 1
image
Chemistry, 22.06.2019 09:00, kcarstensen59070
What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.
Answers: 1
image
Chemistry, 22.06.2019 14:30, larey
How many molecules are in 6.0 moles of methane
Answers: 1
image
Chemistry, 22.06.2019 15:50, danny4577
How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate
Answers: 1
You know the right answer?
Considere dois tubos de ensaio, cada um contendo diferentes solventes: tubo A - água (H2O) e tubo B...

Questions in other subjects: