Customize Consent Preferences

We use cookies to help you navigate efficiently and perform certain functions. You will find detailed information about all cookies under each consent category below.

The cookies that are categorized as "Necessary" are stored on your browser as they are essential for enabling the basic functionalities of the site. ... 

Always Active

Necessary cookies are required to enable the basic features of this site, such as providing secure log-in or adjusting your consent preferences. These cookies do not store any personally identifiable data.

No cookies to display.

Functional cookies help perform certain functionalities like sharing the content of the website on social media platforms, collecting feedback, and other third-party features.

No cookies to display.

Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics such as the number of visitors, bounce rate, traffic source, etc.

No cookies to display.

Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.

No cookies to display.

Advertisement cookies are used to provide visitors with customized advertisements based on the pages you visited previously and to analyze the effectiveness of the ad campaigns.

No cookies to display.

EstequiometriaPUCQuímica Geral

Na poluição atmosférica, um dos principais irritantes…

(PUC-RJ 2001) Na poluição atmosférica, um dos principais irritantes para os olhos é o formaldeído, CH2O, o qual é formado pela reação do ozônio com o etileno:

O3(g) + C2H4(g) → 2 CH2O(g) + O(g)

Num ambiente com excesso de O3(g), quantos mols de etileno são necessários para formar 10 mols de formaldeído?

a) 10 mols

b) 5 mols

c) 3 mols

d) 2 mols

e) 1 mol

Utilize a tabela periódica para calcular as massas molares quando necessário.

Resolução

De acordo com a equação química, já balanceada, a reação de 1 mol de etileno produz 2 mols de formaldeído. Assim, a quantidade de matéria de etileno necessária para produzir 10 mols de formaldeído, é dada por:

Gabarito: LETRA B

Confira mais EXERCÍCIOS RESOLVIDOS sobre ESTEQUIOMETRIA.

Tá afim de ver mais RESOLUÇÕES COMENTADAS da PUC?

Não achou o que procura?