# ACIDBASEНСCI-H2SO4HSO4NegligibleStrong-HNO3NO3Нзо*НаоHSO4so,2-H2SO3HSO3H3PO4HаРОд-HFCH3COOHCH3COOH2CO3НCО3"WeakWeak< H2SHSHSO3sog2-H2PO4НРО,2-NH4+NH3НСОЗco,2-НРО,2-PO,3-H20OH"s2-StrongHS-Negligible-он-02ACID STRENGTHBASE STRENGTH

Question
78 views

Use Apendix C or Figure 18.9 to determine whether Kc > 1 or Kc < 1 for each reaction.

(a) H2SO3 + NH3 HSO3- + NH4+

Kc < 1 or Kc > 1

(b) HCN + HCO3- H2CO3 + CN -

Kc < 1 or Kc > 1
check_circle

Step 1

The acid donates the proton to form its conjugate base and the base accepts a proton to form its conjugate acid.

When an acid is dissolved in water, the acid (HA) donates a proton to water to form a new acid (conjugate acid) and a new base (conjugate base).

The pair of an Acid -Base differs by a proton called conjugated Acid-Base pair.

In acid - base reaction, if the stronger acid produces the weaker acid which tells that the reaction favors the products, and the Kc value is greater than one (Kc > 1). If the weaker acid produces the stronger acid which tells that the reaction favors the reactants, and the Kc value is less than one (Kc < 1).

Step 2

(a) The given reaction is,

Comparing to ammonium ion (NH4+), sulfurous acid (H2SO3) is stronger. It implies that the stronger acid produces the weaker acid. Therefore, for the given reaction Kc > 1.

...

### Want to see the full answer?

See Solution

#### Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in