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Salts - Section 5.2 Quiz
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Which of the following is the best definition of a salt?
An ionic compound that is formed during the reaction of an acid and a base
Sodium chloride
Any chemical compound that has been iodized in food products to help prevent goiter
A mineral found in seawater, Canadian mines and rock deposits
What is the name of the reaction type that occurs when acids and bases react to form a salt and water?
Neutralization
Acidification
Basifying
Combustion
Metal oxides, such as MgO, can dissolve in water. What is true about the solution these metal oxides form?
The solution is basic
The solution is acidic
The solution is salty
The solution is neutral
Non-metal oxides, such as N2O5, can dissolve in water. What is true about the solution these non-metal oxides form?
The solution is acidic
The solution is basic
The solution is salty
The solution is neutral
Metals and acids can react very rigorously, or very little, depending on the strength of the acid and the reactivity of the metal. If the metals potassium, francium and beryllium were each placed into equal weak-acid solutions, what would most likely be the result?
Francium would react the most; beryllium the least
Beryllium would react the most; francium the least
Francium would react the most; potassium the least
Potassium would react the most; beryllium the least
Acid precipitation appears to effect lakes in eastern Canada far more than those in western Canada. Which of the following statements helps to explain why?
Lakes in eastern Canada do not have natural calcium carbonate deposits to neutralize the acid precipitation like western Canadian lakes do
Calcium carbonate deposits decrease the pH of lakes found in eastern Canada, but not in western Canada
There are no sources of acid precipitation in western Canada, so the problem only exists in eastern Canada
Governments in western Canada have been liming their lakes for many years, while eastern Canadian provinces have only been liming for the past 10 years
What are the products of the following acid-base reaction between hydrofluoric acid and ammonium hydroxide?
HF + NH4OH →
NH4F + H2O
NH3 + HF + H2O
NHF2 + H2O
NF4F + H2O
In the following acid-base neutralization reaction, what term best describes the sodium acetate produced?
CH3COOH + NaOH → NaCH3COO + H2O
Salt
Acid
Base
Neutralization agent
An unknown chemical is burned in the presence of oxygen. The powder produced after burning is then dissolved in water, and the pH of the solution measures 10.2. What could the unknown chemical be?
Calcium, Ca
Glucose, C6H12O6
Methanol, CH3OH
Silicon dichloride, SiCl2
Burning phosphorous in the presence of oxygen creates a brilliant white flame, and white flecks are deposited on the inside of the burning container. If water is added to the white flecks, what colour would the indicator methyl red be when added to the solution?
