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Chemistry, 30.08.2019 00:20 ciarakelly636owuiup

Me ajude pfv:
2)marque a alternativa que contém um ácido e um óxido:
a)h2o e co2
b)h2so4 e no2
c)naoh e hci
d)kci e naoh
e)etanol e glicerina
3)um acido, de acordo com arrthenius, é aquela substância que:
a)quando dissolvida em agua, forma oh-
b)quando dissolvida em álcool, forma h+
c)quando dissolvida em água, forma h+
d)quando dissolvida em clorofórmio, forma h+
e)nenhuma das alternativas
4)para combater a acidez estomacal causada pelo excesso de ácido clorídrico, costuma-se ingerir um antiácido. das substâncias abaixo, encontradas no cotidiano das pessoa, a mais indicada para combater a acidez é:
a)refrigerante
b)suco de laranja
c)água com limão
d)vinagre
e)leite de magnésio
5)sabemos que a escala de ph é formada por números de 1 a 14. valores extremos de ph, muito acima ou muito abaixo de 7,0, costumam ser considerados desfavoráveis para a vida. cite um exemplo de substância com ph ácidos e um exemplo de substância com ph básico.
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Me ajude pfv:
2)marque a alternativa que contém um ácido e um óxido:
a)h2o e co2
...
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