The diagram below shows a set-up that can be used to obtain nitrogen gas in an experiment.
![diagram on set up used to obtain Nitrogen Gas in an experiment](https://www.easyelimu.com/images/form_3_past_papers/Term_1_2021/end_term_1_2021/diagram_on_set_up_used_to_obtain_Nitrogen_Gas_in_an_experiment.PNG)
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- Name liquid L
- What observation would be made in tube K after heating for some time?
- Write an equation for the reaction that took place in tube K.
- If 320cm3 of ammonia gas reacted completely with the copper?
Calculate:- Volume of nitrogen gas produced. (1mk)
- the mass of copper oxide that reacted (3mks)
(Cu = 63.5, O=16.O, one mole of gas occupies 24 litres at room temperature and pressure)
- At the end of experiment the PH of the water in the beaker was found to be about 2. Explain.