Question

which type of paper is used to determine if a solution is acidic or basic, but does not provide a precise ph value?
ph paper
litmus paper
filter paper
chromatography paper
which of the following statements is true about acids?
they turn red litmus paper blue
they have ph values above 7
they taste bitter and feel slippery
they release hydrogen ions (h+) in solution

Explanation:

• First question: Litmus paper changes color to indicate if a solution is acidic (turns blue litmus red) or basic (turns red litmus blue), but it does not give a precise pH value. pH paper gives a more precise pH - related color - change range. Filter paper is used for separation (e.g., in filtration), and chromatography paper is used in chromatography for separating mixtures based on different affinities.
• Second question: Acids release hydrogen ions (\(H^{+}\)) in solution. Bases turn red litmus paper blue. Acids have pH values below 7 (bases have pH values above 7). Bases taste bitter and feel slippery, while acids usually have a sour taste (though we should not taste chemicals in a lab).

Answer:

• First question: Litmus paper
• Second question: They release hydrogen ions (\(H^{+}\)) in solution