The pH of two solutions A and B are 11 and 7.7, respectively. What can you say about the nature of these solutions?
(a) A solution has a pH of 7. Explain how you would :
(i) increase ist pH; (ii) decrease its pH;
(b) If a solution changes the colour of litmus from red to blue, what can you say about its pH?
(c) What can you say about the pH of a solution, that liberates carbon dioxide from sodium carbonate ?
What can you say about the pH of a solution that liberates carbon dioxide from sodium carbonate?
When red litmus is added to a solution of borax it turns blue. What can you say about the pH of borax solution?