Question

Write the name and formula of (1) an acidic salt and (2) a basic salt giving the name of the parent acid and parent base used to form the salt in each case.

Name and state in brief the process which is used to prepare sodium hydroxide from sodium chloride. In this process along with the main product two gases 'X' and 'Y' are also given off at the two electrodes. Name 'X' and 'Y' specifying the name of their respective electrode at which each gas is obtained. One of these gases when reacts with dry calcium hydroxide produces a compound 'Z' which is widely used in water treatment plants and textile industries. Name Z and write chemical equation for the reaction involved in its formation.

Name the substance which on treatment with chlorine yields bleaching powder.

Write balanced chemical equations for the following statements:

(i) An aqueous solution turns blue litmus red. Which of the following solutions when added in excess would reverse the change ? (1) Lemon juice (2) Magnesium hydroxide (3) Vinegar (4) Calcium sulphate (ii) Out of the following, which compound/compounds will turn the phenolphthalein solution pink ? (1) CH3COOH (2) Ca(OH)2 (3) HCl (4) NaOH (iii) Name a gas whose aqueous solution is basic. Write the formula/name of this solution. (iv) A basic substance is used to treat a honey-bee sting. Why ? (v) Name the acid which is present in (1) Tomato and (2) Tamarind.