Question
Distinguish between acid and alkali (other than indicators).
✓
Answer
Acid and alkali:
An acid is that substance which gives $H ^{+}$ions when dissolved in water.
An alkali is that substance which gives $OH ^{-}$ions when dissolved in water.
An acid is that substance which gives $H ^{+}$ions when dissolved in water.
An alkali is that substance which gives $OH ^{-}$ions when dissolved in water.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
Define pH.
Copper sulphate solution is electrolysed using a platinum anode. Study the diagram given alongside and answer the following questions:
- Give the names of the electrodes A and B.
- Which electrode is the oxidising electrode?
Explain the following:
The source of heat is removed after sometime in Habers process.
The source of heat is removed after sometime in Habers process.
State : Gay-Lussac's Law of combining volumes.
An atom X has 2, 8, 7 electrons in its shell. It combines with Y having 1 electron in its outermost shell.
(a) What type of bond will be formed between X and Y?
(b) Write the formula of the compound formed.
(a) What type of bond will be formed between X and Y?
(b) Write the formula of the compound formed.
When an ammonium salt is warmed with a sodium hydroxide solution, a gas is evolved. State three ways in which you can identify this gas.
What volume of propane is burnt for every $500 cm^3$ of air used in the reaction under the same conditions? (assuming oxygen is $1/5^{th}$ of air)
$C_3H_8+ 5O_2 \rightarrow 3CO_2 + 4H_2O$
→$C_3H_8+ 5O_2 \rightarrow 3CO_2 + 4H_2O$
If 6 liters of hydrogen and 4 liters of chlorine are mixed and exploded and if water is added to the gases formed, find the volume of the residual gas.
Define the following and give two examples in case an acid salt .