Assertion: hydrogen sulfide | /r/CapableOf | give the sulfide ion s2−
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Source sentences:
text: Hydrogen sulfide is slightly soluble in water and acts as a weak acid, giving the hydrosulfide ion HS− (pK a = 6.9 in 0.01-0.1 mol/litre solutions at 18 °C) and the sulfide ion S2− (pK a = 11.96).