2QAT1 FQ Aula 12nov2024

Quiz
•
Professional Development
•
11th Grade
•
Easy
Used 1+ times
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o valor do pk da água a 25 °C
2
7
14
8
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual o pH da água pura a 25 °C?
5
10
3
7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Defina uma solução alcalina, em termos de concentrações.
[H+] = [OH-]
[H+] < [OH-]
[H+] > [OH-]
[H+] < 10-14
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uma solução em que se detecta a [OH-] = 0,005 M, tem pH igual a?
11,7
2,3
10,3
5,7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A análise de uma determinada amostra de refrigerante detectou pH = 3,0. A [H+] é:
10-3
10-6
10-7
10-8
10-11
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O pH do suco de laranja varia, em média, de 3 a 4. O pH do suco de tomate varia de 4 a 4,4. Considerando os extremos dessas faixas de valores de pH que significam maior acidez, pode-se afirmar que [H+] do suco de laranja, em relação à do suco de tomate, é:
140 x maior
140 x menor
igual
10 x maior
10 x menor
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