Advertisements
Advertisements
Question
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 | -- | -- | |
Advertisements
Solution
| Solution | Change in Indicator | Acid/Base | ||
| Litmus | Phenolphthalein | Methyl orange | ||
| 1. | Blue litmus turns red | No change | The orange colour turns red | Acid |
| 2. | Blue litmus turns red | No change | Orange colour turns red | Acid |
| 3. | Red litmus turns blue | Colourless to pink | The orange colour turns yellow | Base |
RELATED QUESTIONS
What happens during a wasp sting? What is its remedy?
Write any two important uses of bases.
Bee stings can be treated with ______.
State one observation for each of the following :
A small piece of zinc is added to dilute hydrochloric acid
Fill in the blank
Vinegar is the source of ________ acid.
What are the uses of acids?
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solutions would reverse the change?
You are provided with four test tubes containing sugar solution, baking soda solution, tamarind solution, salt solution. Write down an activity to find the nature (acidic/basic/neutral) of each solution.
Complete the following equation.
HCl + ______ → NaCl + H2O
You are supplied with five solutions: A, B, C, D and E with pH values as follows: A = 1.8, B = 7, C = 8.5, D = 13, and E = 5
Classify these solutions as neutral, slightly or strongly acidic and slightly or strongly alkaline.
Which solution would be most likely to liberate hydrogen with powdered zinc metal. Give a word equation for each reaction.
