General Chemistry Name Due: March 26, 2018; 12:00 p.m. 1. Write balanced equatio

Question

General Chemistry Name Due: March 26, 2018; 12:00 p.m. 1. Write balanced equations that describe the following reactions: a) The dissociation of perchloric acid in water b) the dissociation of propanoic acid (CHCH CO2H) in water c) the dissociation of ammonium ion in water 2. If you mix equal concentrations of reactants and products, which of the following reactions proceed to the right and which proceed to the left? Use the data in in Appendix 5 as needed to help solve these problems. a) H2CO3 (aq)HSO4(aq)HCO3(ag)H SO(ag) b) HF (aq)Cl(aq) F(aq)HCI(aq) c) HF (a)NH(aq)NH4 (aq) +F(aq) d) CN. (aq) + HS04-(aq)-- HCN(aq) + SO42-(aq)

Explanation / Answer

1)

a) Perchloric acid is considered a strong acid, so it would completely dissociate in water. You would only want an arrow pointing to the right (because the equilibrium favors the dissociated ions).

HCLO_4(aq) + H_2O(l) => H_3O^+(aq) + CLO_4^-(aq)

b) This is a weak acid, and will dissociate very sparingly, so you'll want to include the double arrow in your equation

CH_3CH_2CO_2H(aq) + H_2O(l) <=> H_3O^+(aQ) + CH_3CH_2CO_2^-

c) Same as above

NH_4^+(aq) + H_2O(l) <=> H3_O^+(aq) + NH_3(aq

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