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प्रश्न
Give two examples of the following:
hydracids
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उत्तर
Hydrochloric acid (HCl), Hydrobromic acid (HBr)
संबंधित प्रश्न
A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish-brown. On rinsing the shirt with plenty of water, the reddish-brown stain turns yellow again.
Explain the changes in colour of this indicator which take place during washing and rinsing the shirt.
Which chemical is injected into the skin of a person during the nettle leaf hair sting?
How can the effect of these stings be neutralised?
What type of ions is formed:
when a base (or alkali) is dissolved in water?
Name an acid used as an eyewash.
what effect does the concentration of [H3O+] ion have on solution?
The preparation of Lead sulphate from Lead carbonate is a two-step process. (Lead sulphate cannot be prepared by adding dilute Sulphuric acid to Lead carbonate.)
Why is the direct addition of dilute sulphuric acid to Lead carbonate an impractical method of preparing Lead sulphate?
Acid mixed with base forms ______.
Lemon juice and vinegar taste ______ because they contain ______.
Complete the following equation.
H+ + H2O → ______.
A metal 'M' on reacting with dilute acid liberates a gas 'G'. The same metal also liberates gas 'G' when reacts with a base.
- Write the name of gas 'G'.
- How will you test the presence of this gas?
- Write chemical equations for the reactions of the metal with (1) an acid and (2) a base.
