Given the following aqueous reactants, write a balanced chemical equation to describe the reaction that occurs when they are mixed.

Question

Given the following aqueous reactants, write a balanced chemical equation to describe the reaction that occurs when they are mixed. Include the formulas and physical states of each reactant and product. If there is no product, state that no reaction will occur. (3 marks each, 9 marks total

a. tin (II) chloride with potassium phosphate

b. nickel (II) nitrate with sodium carbonate

c. sodium nitrate and copper (II) sulfate

Criteria: . If applicable, write a balanced chemical equation given the reactants in each question . Include the states of each product and reactant

Answer 1

These are all double replacement (partner swapping) reactions. Since none of these are acid/base, they are all driven by precipitation reactions. You need to know a reasonable set of solubility rules.

c) no reaction because the normal rules in general chemistry are that all nitrates and sodium salts are soluble. This means that copper(II) nitrate and sodium sulfate will not form.

a) potassium chloride is soluble because all IA salts are soluble and all chlorides except (lead, silver and mercury) are soluble. Tin(II) phosphate is insoluble and will precipitate. The reaction will look like:

K₂PO₄(aq) + SnCl₂(aq) → 2KCl(aq) + SnPO₄(s or cr)

I will leave b for you and it does form a precipitate.

Answer 2

To answer this question you need to be familiar with solubility rules and also what are the charges on the oxyanions.

I have summarized the solubility rules.Rule Number 1,and 2 will help you to answer almost most of the questions

1)NAG SAG (Nitrate, Acetate,Group I, Sulfate, Ammonium, Group VII) are always soluble

There are exceptions.

Sulfate and Group VII are insoluble with PMS (Lead ( Pb),Mercury Hg,Silver (Ag)).

Sulfates are also insoluble with CaStroBear (Ca, Sr, Ba).

2) All carboantes., phosphates, sulfides ,and sulfites are insoluble.

3) All metal oxides ar insoluable, except the ones formed with alkali metal (rule 1) ammonium (rule1), CaO,BaO,SrO