Question

| 192 | CaO + CO2→ CaCO3
a) | Three solutions A, B and C have pH, values of 6, 4 and 10 respectively. Which
solution is highly acidic?
A farmer has found that the pH of soil in his fields is 4.
Name any two chemical materials which he can mix with soil with soil to adjust its ph
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Answer 1

Answer:

B solution is highly acidic

the farmer can add a base to it i.e., NaOH and NaHCO3

Explanation:

it is because the less the H+ ions the less will be the pH and more it will be acidic

since acid and base neutralise each other,farmer can use a strong base

Answer 2

Answer:

please refer to the attachment