Advertisements
Advertisements
Question
The correct way of making a solution of acid in water is to
Options
add water to acid.
add acid to water.
mix acid and water simultaneously
add water to acid in a shallow container.
Solution
add acid to water.
Explanation:
The correct way of making a solution of acid in water is to add acid to water. It is an exothermic reaction and a large amount of heat is produced if water is added to acid.
APPEARS IN
RELATED QUESTIONS
When a solution is added to a cloth strip treated with onion extract, then the smell of onion cannot be detected. State whether the given solution contains an acid or a base.\
When a solution is added to vanilla extract, then the characteristic smell of vanilla cannot be detected. State whether the given solution is an acid or a base.
Classify the following solutions as acids, bases or salts.
Ammonium hydroxide, barium chloride, sodium chloride, sodium hydroxide, H2SO4 and HNO3
Identify the following solutions, whether they are acid or base.
Solution | Change in Indicator | Acid/Base | ||
Litmus | Phenolphthalein | Methyl orange | ||
1. | -- | No change | -- | |
2. | -- | -- | Orange colour turns red | |
3. | Red litmus turns blue | -- | -- |
Complete the following table and write one equation for each to justify the statement:
Reactants |
Products |
Method |
Soluble base + Acid (dil) |
Salt + water |
Neutralisation Titration |
Metal + Non-metal |
Salt (soluble/insoluble) |
______ |
Insoluble base + ______ |
Salt (soluble) + water |
______ |
Active metal + Acid (dil) |
______ + ______ |
______ |
Soluble salt solution (A) + Soluble salt solution (B) |
Precipitated salt + Soluble salt |
______ |
Carbonate/bicarbonate + Acid (dil) |
Salt + ______ + ______ |
Decomposition of carbonate |
Chlorides/nitrates + Acid (conc.) |
______ + ______ |
Decomposition of chlorides and nitrates |
Write the balanced equation for the preparation of the following compound (as major product) starting from iron and using only one other substance:
Iron (III) chloride
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solutions would reverse the change?
Write the important uses of hydrochloric acid and sulphuric acids.
Name the acid present in the given table.
The acid which contains four hydrogen atoms ______.