14 Questions
What is the purpose of 'liming' the soil?
To alter the pH of the soil to a more neutral level
In the preparation of salts using Method A, why is excess solid metal, base, or carbonate added?
To ensure that all acid is consumed
What type of reaction occurs when an acid reacts with an alkali in Method B for salt preparation?
Neutralization reaction
How does the addition of manure or compost affect soil alkalinity?
It helps to neutralize excess alkalinity in the soil
What is the purpose of adding a few drops of indicator in the conical flask during the titration process?
To indicate the end-point of the reaction
In the titration process, why is it important to repeat the experiment without using the indicator after finding the end-point?
To verify the accuracy of the endpoint determination
Which technique is used to separate and purify salts in Method A described in the text?
Crystallization
When preparing salts from suitable starting materials, what role does an alkali play in the process?
Neutralizing the acid to form a salt
In a neutralisation reaction between sulfuric acid and iron, what is the product of the reaction?
Iron sulfate
What is the general formula for a reaction between a carbonate and an acid?
Carbonate + Acid --> CO2 + H2O + Salt
When testing for acids using litmus paper, what color will the litmus paper turn if the substance is acidic?
Red
Which of the following is a characteristic property of bases?
pH greater than 7
In a reaction between calcium carbonate and hydrochloric acid, what gas is produced?
Carbon dioxide
What is the product of the reaction between sulfuric acid and sodium hydroxide?
Sodium sulfate
This quiz covers the characteristics of acids and bases, the effects of soil acidity on plant growth, and methods to control acidity in soil such as 'liming' with substances like calcium oxide and calcium hydroxide. It also includes topics from Exercise C5.07 on Thermochemistry.
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