Home
Class 10
CHEMISTRY
Sodium hydrogen carbonate when added to ...

Sodium hydrogen carbonate when added to acetic acid evolves a gas. Which of the following statements are true about the gas evolved ?
It turns lime water milky
It extinguishes burning splinter
It dissolves is a solution of sodium hydroxide
It has pungent odour

A

b,c,d

B

a,b,c

C

a,d

D

a,b

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ACIDS,BASES AND SALTS

    BEYOND PUBLICATION|Exercise EXERCISE|153 Videos
  • CARBON AND ITS COMPOUNDS

    BEYOND PUBLICATION|Exercise EXERCISE|114 Videos

Similar Questions

Explore conceptually related problems

Which of the following gas is liberated, when sodium carbonate is reacted with Hydrochloric acid ?

Name the gas evolved when acetic acid is react with sodium hydrogen carbonate.

A student takes about 2ml of ethanoic acid in a test tube and adds a pinch of NaHCO_3 to it. He reports the following. Immediately a colourless and odourless gas evolves with a brisk effervescene. The gas turns lime water milky The gas burns with an explosion when a burning splinter is brought near it The gas extinguishes the burning splinter.

When Ethanoic acid is added to a solution of substance X, a colourless and odourless gas Y is liberated. The gas Y turns lime-water milky. The substance X is ____

Collect the salt samples like sodium chloride, aluminium chloride, copper sulphate, sodium acetate, ammonium chloride, sodium hydrogen carbonate and sodium carbonate. Dissolve them in distilled water. Check the action of these solutions with litmus papers. Find the pH using pH paper. Classify them into acidic, basic or neutral salts. Identify the acid and base used to form the above salts. Record your observations in table

A compound of calcium reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle, turns lime water milky. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.

A solid 'X' when heated evolves a colourless gas which does not support combustion. The residue is dissolved in water to form 'Y' which can be used during construction and white washing. When excess carbon dioxide is bubbled through the solution of 'Y' , compound 'Z' is formed. When 'Z' is heated gently, 'X' is reformed. Identify 'X' and discuss the reactions.

Amines are less reactive in substitution reactions. Their reactivity is much lesser than alcohols and alkylflourides towards substitution. Protonation of the amino group makes it a better leaving group, but not nearly as good a leaving group as a protonated alcohol. Protonated amino groups cannot be displaced by OH^(-) because it would react immediately with the acidic hydrogen which would convert it in to a poor nucleophile. The leaving group in quartenary ammonium ion has about the same leaving tendency as a protonated amino group but does not have acidic hydrogen. The reaction of a quartenary ammonium ion with hydroxide ion is known as Hoffmann elimination reaction. The leaving group is tertiary amine. Since a tertiary amine is only a moderately good leaving group, the reaction requires heat. The carbon to which the tertiary amine is attached is designated as alpha carbon. When the hydroxide ion starts to remove a beta H from a quartenary ammonium ion, the leaving group does not immediately start to leave because a tertiary amine is not a good leaving group. As a result, a partial negative charge builds up on the carbon from which the proton is removed. Which of the following statements are true regarding Hoffmann elimination ?