A student dropped a few pieces of marble in dilute hydrochloric acid contained in a test tube. The evolved gas was passed through lime water. What change would be observed in lime water? Write the balanced chemical equations for both the change observed?

Write balanced chemical equations for the following statements: Excess of carbon dioxide gas is passed through lime water.

A metal carbonate X, and a metal bicarbonate Y on reacting with an acid gives a gas which turns lime water milky. What would happen if you pass excess of this gas through water? Write the chemical equation for it?

Metal compound A reacts with dilute hydrochloric acid to produce effervescence the gas evolved exinguishes a burning candle write a balanced chemical equation for the reaction if one the compunds formed is calcium chloride.

Pratyush took sulphur powder on a spatula and heated it. he collected the gas evolved by inverting a test tube over it as shown in figure. what is action of gas on moist litmus paper. write a balanced chemical equation for the reaction taking place

A water soluble compound 'X' of sodium on reacting with dil. H_2SO_4 released a colourless gas accompanied by brisk effervescence. When the gas was passed through water, the solution obtained turned blue litmus solution red. On bubling the gas through lime water, it initially became milky and the milkness disappeared when the gas was passed in excess. Identify the substance 'X' and write the chemical equation for the reactions involved.

Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction mixture. He made the same observations when this element was treated with hydrochloric acid. Suggest how can he identify the produced gas. write the chemical equations for both the reactions.

Concentrated sulphuric acid is added followed by heating to each of the following test tubes labelled (i) to (v). Identify in which of the above test tube the following change will be observed. Support your answer with the help of a chemical equation. Formation of black substance.

Concentrated sulphuric acid is added followed by heating to each of the following test tubes labelled (i) to (v). Identify in which of the above test tube the following change will be observed. Support your answer with the help of a chemical equation. Formation of black substance.