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Acids, Bases & Salts

pH, indicators and neutralisation reactions.

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Q1 · Acids, Bases & Salts · EASY
A student tested a solution with red litmus paper and it turned blue. What is the nature of the solution?
Q2 · Acids, Bases & Salts · EASY
What is the pH value of a neutral solution at 25 degree Celsius?
Q3 · Acids, Bases & Salts · MEDIUM
When hydrochloric acid reacts with sodium hydroxide, the products formed are sodium chloride and water. This type of reaction is known as:
Q4 · Acids, Bases & Salts · HARD
A solution has a pH of 3. If its pH is increased to 5, how many times less acidic does the solution become?
Q5 · Acids, Bases & Salts · MEDIUM
An aqueous solution has a pH value of 3. What will be the pH of the solution obtained when it is diluted 100 times with water?