When dihydrogen phosphate ion reacts with water, water acts as a Brønsted-Lowry base. Choose the reaction that describes this. A. HPO42−(aq) + H2O(l) ⇌ H3O+(aq) + PO43−(aq)
B. H2PO4−(aq) + H2O(l) ⇌ OH−(aq) + H3PO4(aq)
C. H2PO4−(aq) + H2O(l) ⇌ H3O+(aq) + HPO42−(aq)
D. H2PO4−(aq) + H3O+(aq) ⇌ H2O(l) + H3PO4(aq)

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate

The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be: