Question

A litmus paper was dropped 2ml dilute HCL. then 2ml concentrated NaOH was added to it and stirred​

Answer 1

Answer:

The changes observed when a litmus paper was dropped into 2ml dilute HCl. Then 2ml concentrated NaOH was added to it and stirred are:

i. With HCl, the litmus paper turns red.

ii. With NaOH, the litmus paper turns blue.

Explanation: HCl is an acid and has pH lesser than 7, thus its

colour changes to red.

NaOH is a base and has pH greater than 7, thus its colour changes to blue.

Explanation:

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Answer 2

when the litmus paper is dropped in dil. HCL it will turn red as HCLis an acid

when NaOH is dropped in HCL it will turn green, because a neutralization reaction takes place and salt and water are formed.

THE REACTION

HCL+NaOH gives NaCl+H20