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## Write equation to show anion acting as base?

Lol i have this exact same question in Mastering Chemistry.

For NO2- you add water to it and in the products make sure you have enough of each element to make it balanced. Its telling you it acts as a base so you know one of the products will be OH- so it would go like this.

NO2- (aq) + H2O(l) <—> OH-(aq) + HNO2(aq)

And for CN- same thing.

CN-(aq) + H2O(l) <–> OH-(Aq) + HCN(aq)

bear in mind to always name the stages like aqueous and liquid ,

Hope that helps!!!

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