Identify the two conjugate acid-base pairs in each of the following.
a.) H2PO4-(aq)+HSO4-(aq) <=> H2PO4(aq)+ SO4^-2(aq)
b.) HI(aq)+ CN-(aq)<==>HCN-(aq)+ I-(aq)
You've made a typo in a. HSO4^-/SO4^2- is one pair. The other pair SHOULD be H2PO4^-/H3PO4
It should not be a very big problem to do these. All you do is look on the left side and the right side and find the ion/ions that are short or long by a H^+.
Note I see HSO4^- on the left and on the right we have a H^+ missing so that must be the pair.
To identify the conjugate acid-base pairs in each reaction, we need to understand the concept of acid-base conjugate pairs.
In an acid-base reaction, an acid donates a proton (H+) and becomes its conjugate base by losing the proton. Similarly, a base accepts a proton and becomes its conjugate acid by gaining the proton.
Let's break down the given reactions:
a.) H2PO4-(aq) + HSO4-(aq) ⇌ H2PO4(aq) + SO4^-2(aq)
In this reaction, H2PO4- acts as an acid by donating a proton (H+), and it forms its conjugate base HPO4^-2. Likewise, HSO4- acts as an acid by donating a proton (H+), and it forms its conjugate base SO4^-2.
Conjugate acid-base pairs:
- H2PO4- (acid) + HPO4^-2 (conjugate base)
- HSO4- (acid) + SO4^-2 (conjugate base)
b.) HI(aq) + CN-(aq) ⇌ HCN-(aq) + I-(aq)
In this reaction, HI acts as an acid by donating a proton (H+), and it forms its conjugate base I-. Conversely, CN- acts as a base by accepting a proton (H+), and it forms its conjugate acid HCN.
Conjugate acid-base pairs:
- HI (acid) + I- (conjugate base)
- CN- (base) + HCN (conjugate acid)
In summary, the conjugate acid-base pairs in each reaction are:
a.) H2PO4- (acid) + HPO4^-2 (conjugate base)
HSO4- (acid) + SO4^-2 (conjugate base)
b.) HI (acid) + I- (conjugate base)
CN- (base) + HCN (conjugate acid)
a.) The conjugate acid-base pairs are:
1. H2PO4-(aq) and HSO4-(aq) (H2PO4- is the conjugate base of H3PO4 and HSO4- is the conjugate acid of SO4^-2)
2. H2PO4(aq) and SO4^-2(aq) (H2PO4 is the conjugate acid of HPO4^-2 and SO4^-2 is the conjugate base of HSO4-)
b.) The conjugate acid-base pairs are:
1. HI(aq) and CN-(aq) (HI is the conjugate acid of I- and CN- is the conjugate base of HCN)
2. HCN-(aq) and I-(aq) (HCN- is the conjugate acid of CN- and I- is the conjugate base of HI)