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When litmus indicator is put in sodium hydrogen-carbonate (a mild base), it turns blue. Sodium hydrogen-carbonate, also known as sodium bicarbonate, has a basic pH, which causes the blue color change in the litmus paper. In acidic solutions, litmus would turn red, but in this case, the basic nature of sodium hydrogen-carbonate results in a blue coloration.

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1mo ago

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Related Questions

Colour of sodium hydroxide of litmus?

Sodium hydroxide turns red litmus paper blue.


What is the action of sodium hydroxide on the colour of red litmus?

Sodium hydroxide is a strong base and will turn red litmus paper blue. This color change occurs due to the high concentration of hydroxide ions present in the sodium hydroxide solution, which react with the indicator dye in the litmus paper, causing the color change.


What Colour does litmus go in sodium hyroxide?

Green


What colour does universal indicator change to if sodium sodium by carbonate is added?

Universal indicator changes to green when sodium bicarbonate is added.


What colour will sodium carbonate turn red litmus paper?

Sodium carbonate will turn red litmus paper blue. This is because sodium carbonate is a basic compound and can neutralize the acidity in the red litmus paper, causing it to change color.


What is the word equation for sodium hydrogencarbonate reaction?

The word equation for the reaction of sodium hydrogencarbonate with an acid can be represented as: sodium hydrogencarbonate + acid -> salt + water + carbon dioxide. The specific salt formed will depend on the specific acid used in the reaction.


What colour does litmus paper turn in sodium chloride acid?

- sodium chloride is not an acid - in an acid solution the blue litmus paper become red


What is the active chemical in baking soda?

Sodium bicarbonate (or sodium hydrogencarbonate)


How many different elements are there in sodium hydrogencarbonate?

Sodium hydrogencarbonate, also known as sodium bicarbonate or baking soda, contains three different elements: sodium (Na), hydrogen (H), and carbon (C).


What colour should sodium sulphate be in universal indicator?

Sodium sulfate is typically colorless in universal indicator. Universal indicator is a pH indicator that changes color based on the pH of a solution, and sodium sulfate is a neutral compound that does not significantly affect the pH.


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NaHCO3 is the chemical formula of sodium hydrogen carbonate or sodium bicarbonate


What colour is sodium hydroxide in universal indicator?

Sodium hydroxide turns Universal Indicator solution dark purple, indicating it is a strong base with a high pH level.