
pH e pOH
Authored by Rafael Ferreira
Chemistry
2nd Grade
Used 14+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A 25 °C, o pOH de uma solução de ácido clorídrico, de concentração 0,10 mol/L, admitindo-se ionização total do ácido, é:
1
13
7
10
5
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Se o pH da água da torneira é 5,5 e o da água mineral é 9,5, quantas vezes a água da torneira é mais ácida que a água mineral?
4 vezes
100 vezes
0,001 vezes
10000 vezes
1 vez
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Entre os líquidos da tabela adiante, tem caráter ácido apenas:
o leite e a lágrima.
a água de lavadeira.
o café preparado e a coca-cola.
a água do mar e a água de lavadeira.
a coca-cola.
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Quando a concentração hidrogeniônica apresentar um valor de 0,000000001 molares, o valor do pOH será
9
5
14
8
6
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Para combater a azia provocada em nosso estômago, deve se ingerir quais alimentos?
limão
abacaxi
morango
batata
água
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sabendo que o pH do café é 5, quantas vezes o café é mais ácido que a água pura?
2
10
neutro
100
1
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A chuva apresenta um caráter:
ácido
básico
neutro
adstringente
amargo
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