Consider a piston$-$cylinder device filled with R$-410$a refrigerant at p $=2$ MPa and $50$C$,$ which undergoes a process to a saturated saturated vapour.

$($a$)$ What is the initial phase of this mixture?

$($b$)$ For an isobaric process: i$.$ Sketch the process on an appropriate state diagram ii$.$ Find the work and heat transfer transferred to the system per kg refrigerant

$($c$)$ For an isochoric process: i$.$ Sketch the process on an appropriate state diagram ii$.$ Find the work and heat transfer transferred to the system per kg refrigerant

$($d$)$ For an isothermal process: i$.$ Sketch the process on an appropriate state diagram ii$.$ Find the work and heat transfer transferred to the system per kg refrigeran