Which substances will make a salt when combined? a) vinegar and soda b) soda and wine c) detergent and ammonia d) fertilizer and vinegar

Iknow #2 is d. i just need to know why

What are the genotypic and phenotypic ratios

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount