Paper 1 February/March 2022 CHEMISTRY (9701/12) IGCSE
Cambridge
AS & A Level
Chemistry (9701)
خرداد
2022
شامل مباحث:
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
75 دقیقه
پیش نمایش صفحه اول فایل
Danial Naderi
ثبت شده در
8 بهمن 1401
Bromocresol green is an acid-base indicator. Below a pH of 3.8 it is yellow. Above a pH of 5.4 it is blue. Between these values it is green.
Bromocresol green is added to the aqueous solution formed when the chloride of element T is added to water. The colour becomes yellow.
When an excess of the solid oxide of element U is slowly added to this yellow solution, the indicator turns green then blue.
