What happens to a reaction at equilibrium when a product is removed from the reaction system? a. the reaction makes more products. b. the reaction makes more reactants. c. the reaction is unchanged?

Answer : The correct option is, (a) the reaction makes more products.

Explanation :

Le-Chatelier's principle : This principle states that if any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

When a product is removed from the reaction system :

If the product is removed from the reaction then amount of reactant increases and product decrease. The equilibrium will shift in the direction where decrease in the amount takes palace. As, the amount is decreasing on product side. So, equilibrium will shift in the right direction that means in product side.

Hence, the correct option is, (a)

3 hours because it is a decent distance.

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.