Advertisements
Advertisements
Question
Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and the third is a sugar solution. How will you identify them? You have only turmeric indicator.
Advertisements
Solution
Test the liquids one by one by placing a few drops of the three liquids on the turmeric indicator.
- If yellow colour is obtained then the liquid will be hydrochloric acid.
- If red or pink colour is obtained then it will be sodium hydroxide.
- If there is no change then it is a sugar solution.
APPEARS IN
RELATED QUESTIONS
Those substances whose smell (or odour) changes in acidic or basic solutions are called ______ indicators.
Two solutions A and B have pH values of 3.0 and 9.5 respectively. Which of these will turn litmus solution from blue to red and which will turn phenolphthalein from colourless to pink?
Neutral substances have a pH of ______.
Name the acids or alkalis used to make car batteries.
What do you think will be the pH in the stomach of a person suffering from indigestion: less than 7 or more than 7?
When a solution becomes more acidic, does the pH get higher or lower?
What effect does the concentration of OH− ions have on the nature of a solution?
The colour of methyl orange indicator in a solution is yellow. The pH of this solution is likely to be ______.
Which of the following elements would form oxides which would indicate pH values less than seven, using moist pH paper?
Magnesium, Carbon, Sulphur, Hydrogen, Copper
Assertion: Methyl orange and phenolphthalein are natural indicators.
Reason: Methyl orange is yellow in colour while phenolphthalein is pink.
